Federal Signal Corporation VIPER EXT User manual

Installation Manual
2562387B
REV. B 1008
Printed in U.S.A.
VIPER™EXT

VIPER EXT, IMPAXX,and INTELLI-FLASH are trademarks of Federal Signal Corporation.
SOLARIS is a registered trademarks of Federal Signal Corporation.
Plexus is a registered trademark of BTI Chemical Company Inc.

i
Contents
Safety Message to Installers and Service Personnel of Warning Light
Equipment............................................................................................... 1
Safety Message to Operators of Warning Light Equipment ............... 4
Unpacking Your Shipment ..................................................................... 5
An Overview of the VIPER EXT Series LED Light Heads ...................... 5
Installing the VIPER EXT Series LED Light Heads................................. 6
Converting a Light Head from Controller to Follower...................................... 6
Mounting the VIPER EXT to a Vehicle from the Front ...................................... 7
Mounting the VIPER EXT to a Vehicle from the Back....................................... 9
Wiring the VIPER EXT in the Vehicle .............................................................. 11
Selecting a Flash Pattern ................................................................................. 13
Maintaining the VIPER EXT Series LED Light Heads........................... 14
Cleaning the Light Heads ............................................................................... 14
Replacing the Mounting Hardware ................................................................. 15

Contents
ii

1
Safety Message to Installers and Service Personnel of Warning Light Equipment
Safety Message to Installers and Service Personnel
of Warning Light Equipment
People’s lives depend on your proper installation and servicing of Federal
Signal products. It is important to read and follow all instructions shipped
with this product. In addition, listed below are some other important safety
instructions and precautions you should follow:
Before Installation or Service
Qualifications
s4OPROPERLYINSTALLORSERVICETHISEQUIPMENTYOUMUSTHAVEAGOODUNDER-
STANDINGOFAUTOMOTIVEMECHANICALANDELECTRICALPROCEDURESANDSYSTEMSalong with proficiency in the installation and service of safety warning
EQUIPMENT!LWAYSREFERTOTHEVEHICLESSERVICEMANUALSWHENPERFORMINGEQUIPMENTINSTALLATIONSONAVEHICLELight Hazards
s4OBEANEFFECTIVEWARNINGDEVICETHISPRODUCTPRODUCESBRIGHTLIGHTTHATCANBEHAZARDOUSTOYOUREYESIGHTWHENVIEWEDATACLOSERANGE$ONOTstare directly into this lighting product at a close range or permanent dam-
age to your eyesight may occur.
s$ONOTINSTALLTHELIGHTSYSTEMINANAREATHATWOULDBLOCKIMPAIRORBLINDTHEDRIVERSVISION%NSURETHATTHELIGHTSYSTEMISMOUNTEDINAPOSITIONTHATISOUTSIDEOFTHEDRIVERSlELDOFVISIONSOTHEDRIVERCANSAFELYOPERATEthe vehicle.
s&EDERAL3IGNALPOWERSUPPLIESANDLIGHTHEADSAREDESIGNEDTOWORKTOGETH-
ERASASYSTEM#OMBININGLIGHTHEADSANDAPOWERSUPPLYFROMDIFFERENTmanufacturers may reduce the warning effectiveness of the lighting system
ANDMAYDAMAGETHECOMPONENTS9OUSHOULDVERIFYORTESTYOURCOMBINA-
TIONTOENSURETHESYSTEMWORKSTOGETHERANDMEETSFEDERALSTATEANDLOCALstandards or guidelines.
%LECTRICAL(AZARDSs3TROBESYSTEMSPRESENTASHOCKHAZARDBECAUSETHEYUSEHIGHVOLTAGETOOP-
ERATE$ONOTHANDLESTROBECABLESTHEPOWERSUPPLYORBULBSORREMOVETHELENSWHILETHEEQUIPMENTISCONNECTED3TROBESYSTEMSCANALSOHOLDTHEIRCHARGEEVENAFTERTHEYHAVEBEENTURNEDOFF!FTERDISCONNECTINGPOWERTOTHEUNITWAITlVEMINUTESBEFOREHANDLINGANYPARTSOFTHESTROBESYSTEMs!LIGHTSYSTEMISAHIGHCURRENTSYSTEM&ORTHESYSTEMTOFUNCTIONPROP-
ERLYASEPARATENEGATIVEnCONNECTIONANDPOSITIVECONNECTIONMUSTBEMADE!LLNEGATIVECONNECTIONSSHOULDBECONNECTEDTOTHENEGATIVEBAT-
TERYTERMINALANDASUITABLEFUSESHOULDBEINSTALLEDONTHEPOSITIVEBATTERY

2
Safety Message to Installers and Service Personnel of Warning Light Equipment
TERMINALCONNECTIONASCLOSETOTHEBATTERYASPOSSIBLE%NSURETHATALLWIRESand fuses are rated correctly to handle the device and system amperage
REQUIREMENTS
s.EVERATTEMPTTOINSTALLAFTERMARKETEQUIPMENTTHATCONNECTSTOTHEVEHICLEWIRINGWITHOUTREVIEWINGAVEHICLEWIRINGDIAGRAMAVAILABLEFROMTHEVE-
HICLEMANUFACTURER%NSURETHATYOURINSTALLATIONWILLNOTAFFECTVEHICLEOP-
ERATIONORMANDATEDSAFETYFUNCTIONSORCIRCUITS!LWAYSCHECKTHEVEHICLEfor proper operation after installation.
s4HELIGHTINGSYSTEMCOMPONENTSESPECIALLYLIGHTBULBSSTROBETUBES,%$SANDTHEOUTERHOUSINGGETHOTDURINGOPERATION"ESURETODISCON-
NECTPOWERTOTHESYSTEMANDALLOWTHESYSTEMTOCOOLDOWNBEFOREHAN-
dling any components of the system.
s(ALOGENLIGHTBULBSANDSTROBETUBESAREPRESSURIZEDANDIFBROKENCANBURSTANDRESULTINmYINGGLASS!LWAYSWEARGLOVESANDEYEPROTECTIONwhen handling these components.
s$ONOTMOUNTARADIOANTENNAWITHININCHESCMOFTHELIGHTINGsystem. Placing the antenna too close to the lighting system could cause
THELIGHTINGSYSTEMTOMALFUNCTIONORBEDAMAGEDBYSTRONGRADIOlELDSMounting the antenna too close to the lighting system may also cause the
radio noise emitted from the lighting system to interfere with the reception
of the radio transmitter and reduce radio reception.
s$ONOTATTEMPTTOWASHANYUNSEALEDELECTRICALDEVICEWHILEITISCONNECTEDto its power source.
During Installation and Service
s$/./4GETMETALSHAVINGSINSIDETHEPRODUCT-ETALSHAVINGSINTHEPRODUCTCANCAUSETHESYSTEMTOFAIL)FDRILLINGMUSTBEDONENEARTHEUNITPLACEAN%3$APPROVEDCOVEROVERTHEUNIT)NSPECTTHEUNITAFTERMOUNTINGTOBESURETHEREARENOSHAVINGSPRESENTINORNEARTHEUNITs$/./4CONNECTTHISSYSTEMTOTHEVEHICLEBATTERYUNTIL!,,OTHERELEC-
TRICALCONNECTIONSAREMADEMOUNTINGOFALLCOMPONENTSISCOMPLETEANDyou have verified that no shorts exist. If the wiring is shorted to the vehicle
BODYORFRAMEHIGHCURRENTCONDUCTORSCANCAUSEHAZARDOUSSPARKSRESULT-
INGINELECTRICALlRESORmYINGMOLTENMETALs$/./4INSTALLEQUIPMENTORROUTEWIRINGORTHEPLUGINCORDINTHEDEPLOYMENTPATHOFANAIRBAGs"EFOREMOUNTINGANYCOMPONENTSCHECKTHEMANUALTOBESURETHATTHECOMPONENTYOUAREINSTALLINGISSUITABLEFORUSEINTHATAREAOFTHEVEHICLE-ANYCOMPONENTSARENOTSUITABLEFORUSEINTHEENGINECOMPARTMENTORother extreme environmental exposure areas.

3
Safety Message to Installers and Service Personnel of Warning Light Equipment
s4HESERVICELIFEOFLIGHTBULBSANDSTROBESTUBESWILLBESHORTENEDIFTHEglass portion is touched during installation. Use gloves when handling
THESECOMPONENTS)FTHEGLASSPORTIONHASBEENTOUCHEDCLEANTHEGLASScarefully with isopropyl alcohol.
s"EFOREDRILLINGINTOAVEHICLESTRUCTUREBESURETHATBOTHSIDESOFTHESURFACEARECLEAROFANYTHINGTHATCOULDBEDAMAGED2EMOVEALLBURRSFROMDRILLEDHOLES4OPREVENTELECTRICALSHORTSGROMMETALLDRILLEDHOLESTHROUGHWHICHWIRINGPASSES!LSOENSURETHATTHEMOUNTINGSCREWSDONOTCAUSEELECTRI-
cal or mechanical damage to the vehicle.
s2EFERTOTHEMANUALPACKEDWITHTHELIGHTINGSYSTEMFORPROPERELECTRICALCONNECTIONSADDITIONALPRECAUTIONSANDINFORMATIONs"ECAUSEVEHICLEROOFCONSTRUCTIONANDDRIVINGCONDITIONSVARYDONOTDRIVEa vehicle with a magnetically mounted warning light installed. The light
COULDmYOFFTHEVEHICLECAUSINGINJURYORDAMAGE2EPAIROFDAMAGEIN-
CURREDBECAUSEOFIGNORINGTHISWARNINGSHALLBETHESOLERESPONSIBILITYOFthe user.
s4OAVOIDDENTINGTHEROOFOFTHEVEHICLEPLACETHELIGHTBARMOUNTINGFEETASCLOSETOOUTEREDGEOFTHEROOFASPOSSIBLEs2OOFDAMAGECANOCCURIFTHEHOOKADJUSTMENTBOLTSAREOVERTIGHTENED4IGHTENADJUSTMENTBOLTSTOFTLBTOPREVENTTHELIGHTBARFROMSLIDINGFRONTTOBACKWHENPULLINGONTHEMOUNTINGBRACKETs,OCATETHELIGHTSYSTEMCONTROLSSOTHE6%()#,%AND#/.42/,3CANBEoperated safely under all driving conditions.
After Installation or Service
s!FTERINSTALLATIONTESTTHELIGHTSYSTEMTOENSURETHATITISOPERATINGPROP-
erly.
s4ESTALLVEHICLEFUNCTIONSINCLUDINGHORNOPERATIONVEHICLESAFETYFUNC-
TIONSANDVEHICLELIGHTSYSTEMSTOENSUREPROPEROPERATION%NSURETHATTHEinstallation has not affected the vehicle operation or changed any vehicle
safety function or circuit.
s3CRATCHEDORDULLREmECTORSMIRRORSORLENSESWILLREDUCETHEEFFECTIVE-
NESSOFTHELIGHTINGSYSTEM!VOIDHEAVYPRESSUREANDUSEOFCAUSTICORPETROLEUMBASEDPRODUCTSWHENCLEANINGTHELIGHTINGSYSTEM2EPLACEANYOPTICALCOMPONENTSTHATMAYHAVEBEENSCRATCHEDORCRAZEDDURINGSYSTEMinstallation.
s$ONOTATTEMPTTOACTIVATEORDEACTIVATETHELIGHTSYSTEMCONTROLSWHILEdriving in a hazardous situation.
s9OUSHOULDFREQUENTLYINSPECTTHELIGHTSYSTEMTOENSURETHATITISOPERATINGproperly and that it is securely attached to the vehicle.

4
Safety Message to Operators of Warning Light Equipment
s!FTERINSTALLATIONANDTESTINGARECOMPLETEPROVIDEACOPYOFTHESEINSTRUC-
tions to instructional staff and all operating personnel.
s&ILETHESEINSTRUCTIONSINASAFEPLACEANDREFERTOTHEMWHENMAINTAININGand/or re-installing the product.
Failure to follow all safety precautions and instructions may result in
property damage, serious injury, or death to you or others.
RETAIN AND REFER TO THIS MESSAGE
Safety Message to Operators of Warning Light Equipment
People’s lives depend on your safe use of our products. Listed below are some
important safety instructions and precautions you should follow:
s$ONOTATTEMPTTOACTIVATEORDEACTIVATETHELIGHTSYSTEMCONTROLWHILEdriving in a hazardous situation.
s!LTHOUGHYOURWARNINGSYSTEMISOPERATINGPROPERLYITMAYNOTBECOM-
pletely effective. People may not see or heed your warning signal. You
must recognize this fact and continue driving cautiously.
s!LSOSITUATIONSMAYOCCURWHICHOBSTRUCTYOURWARNINGSIGNALWHENNATU-
RALANDMANMADEOBJECTSAREBETWEENYOURVEHICLEANDOTHERSSUCHASRAIS-
INGYOURHOODORTRUNKLID)FTHESESITUATIONSOCCURBEESPECIALLYCAREFUL
s!LLEFFECTIVESIRENSANDHORNSPRODUCELOUDSOUNDSWHICHMAYCAUSEINcertain situations permanent hearing loss. You and your passengers should
consider taking appropriate safety precautions such as wearing hearing
protection.
s4OBEANEFFECTIVEWARNINGDEVICETHISPRODUCTPRODUCESBRIGHTLIGHTTHATCANBEHAZARDOUSTOYOUREYESIGHTWHENVIEWEDATACLOSERANGE$ONOTstare directly into this lighting product at a close range or permanent dam-
age to your eyesight may occur.
s)TISIMPORTANTTHATYOUFULLYUNDERSTANDHOWTOSAFELYOPERATETHISWARNINGSYSTEMBEFOREUSEs9OUSHOULDONLYOPERATEYOURVEHICLEANDITSLIGHTSOUNDSYSTEMINACCOR-
DANCEWITHYOURDEPARTMENTS3TANDARD/PERATING0ROCEDURESs)FASELECTEDFUNCTIONDOESNOTPERFORMPROPERLYORIFANYOFTHELAMPSRE-
MAINILLUMINATEDWHENTHECONTROLISOFFDISCONNECTTHEPOWERCONNECTORfrom the control unit and contact the nearest service center.
s!TTHESTARTOFYOURSHIFTYOUSHOULDENSURETHATTHEENTIREWARNINGLIGHTsystem and the siren system is securely attached and operating properly.
s3UCTIONCUPMOUNTINGISFORTEMPORARYAPPLICATIONSONLY4HEUNITSHOULDBEREMOVEDFROMTHEWINDOWANDSTOREDSECURELYWHENNOTINUSE4EMPER-
ature changes and sunlight can cause suction cups to lose holding power.

5
An Overview of the Viper EXT Series LED Light Heads
0ERIODICALLYCHECKTHEUNITTOBESURETHESUCTIONCUPSHAVEAlRMGRIPONTHEMOUNTINGSURFACE!NIMPROPERLYSECUREDLIGHTCOULDFALLOFFOFTHEVEHICLECAUSINGINJURYANDDAMAGEs(OLDINGPOWEROFMAGNETICMOUNTINGSYSTEMSISDEPENDENTUPONSURFACElNISHSURFACEmATNESSANDTHICKNESSOFTHESTEELMOUNTINGSURFACE4HERE-
FORETOPROMOTEPROPERMAGNETICMOUNTING
 -OUNTINGSURFACEANDMAGNETSMUSTBEKEPTCLEANDRYANDFREEOFforeign particles that prevent good surface contact.
 %NSURETHATMOUNTINGSURFACEISmAT
 !MAGNETMOUNTINGSYSTEMSHOULDNOTBEUSEDONVEHICLESWITHVINYLtops.
 4OPREVENTSLIDINGOFLIGHTASSEMBLYONMOUNTINGSURFACEQUICKAC-
CELERATIONANDHARDSTOPSSHOULDBEAVOIDEDFailure to follow these safety instructions and precautions may result in
property damage, serious injury, or death to you, to passengers, and to
others.
RETAIN AND REFER TO THIS MESSAGE
Unpacking Your Shipment
%ACHVIPER™EXT comes with the mounting hardware shown in Figure 1 on page
!FTERUNPACKINGTHEVIPER EXT3ERIES,%$,IGHTSANDMOUNTINGHARDWAREINSPECTTHEMFORDAMAGETHATMAYHAVEOCCURREDINTRANSIT)FAPRODUCTHASBEENDAMAGEDDONOTATTEMPTTOINSTALLOROPERATEIT&ILEACLAIMIMMEDIATELYWITHTHECARRIERDESCRIBINGTHEEXTENTOFDAMAGE#AREFULLYCHECKALLENVELOPESSHIPPINGLABELSANDTAGSBEFOREREMOVINGORDESTROYINGTHEMAn Overview of the VIPER EXT Series LED Light Heads
The VIPER EXT3ERIES,%$,IGHT(EADSAREFULLYSEALEDLOWCURRENTWARNINGLIGHTSTHATCANBEMOUNTEDONTHEINSIDEOROUTSIDEOFTHEVEHICLE4HEYAREDE-
SIGNEDTOBEMOUNTEDHORIZONTALLYPREFERABLYWITHTHE,%$SUPThe VIPER EXT uses SOLARIS§,%$REmECTORTECHNOLOGYTOPROVIDEABRIGHTANDeffective secondary warning signal. VIPER EXTMODELSHAVEEIGHT,%$STHATAREEITHERAMBERBLUEGREENREDORWHITEWITHACLEARLENS4HEVIPER EXT can also
BEORDEREDWITHCOLOREDLENSESMATCHINGTHE,%$COLOR4HELENSESAREAVAILABLEINANENHANCEDOFFAXISCONlGURATION4HEVIPER EXT has
ANINTERNALmASHINGCIRCUITWITHSELECTABLEmASHPATTERNSINCLUDINGA3TEADY"URNPATTERNFORUSEWITHANEXTERNALmASHER0ATTERNSARESELECTEDBYTOUCHINGTHEWHITEPATTERNSELECTIONWIRETO6DC"!4

6
Installing the Viper EXT Series LED Light Heads
,IGHTHEADSCANBESETTOSYNCHRONIZESYNCHROSHIFTORBOTH4HESYNCHRONIZESYNCHROSHIFTFEATUREISFULLYCOMPATIBLEWITHTHE&EDERAL3IGNALVIPER3ANDIMPAXX™ warning lights. The VIPER EXTALSOHASSEVERALmOATINGSYNCHPATTERNSETSTHATAREWITHINONEmASHPERMINUTEOFEACHOTHERTable 1ONPAGE)FONELIGHTISSETAT&0-ANDANOTHERAT&0-FOREXAMPLETHELIGHTSAPPEARTOmigrate in and out of synchronization.
!LLVIPER EXT models are designed for use with all Federal Signal switch con-
trollers. The VIPER EXTLIGHTHEADISSUPPLIEDWITHABLACKPOLYCARBONATEBEZELARUBBERIZEDGASKETANDMOUNTINGHARDWAREFORSURFACEMOUNTING4HEVIPER EXT
HASANOPERATINGTEMPERATUREOF&TO&#TO#Installing the VIPER EXT Series LED Light Heads
PROPER USE OF LIGHT HEADS
Do not use the VIPER EXT as a brake light or as a primary turn-signal light.
Failure to follow this warning will reduce the effectiveness of the lighting sys-
tem and may result in serious injury or death to you or others.
Before installing the VIPER EXTREADALLINSTRUCTIONSANDPLANALLWIRINGANDCABLEROUTING5SEGROMMETSWIRETIESLOOMSANDCABLEMOUNTSINSTALLERSUPPLIEDASneeded to secure and protect the wiring.
4HESTEPSINTHEINSTALLATIONARE/PTIONAL3ETALIGHTHEADTOCONTROLTHEmASHPATTERNSOFONEORMORELIGHTheads in the VIPER EXT system.
-OUNTTHEVIPER EXT system to the vehicle.
3. Wire the VIPER EXT system to the vehicle.
3ELECTAmASHPATTERNFORTHECONTROLLERLIGHTHEADConverting a Light Head from Controller to Follower
Several VIPER EXTLIGHTHEADSCANBECONTROLLEDTHROUGHTHESELECTEDmASHPAT-
TERNOFONECONTROLLERLIGHTHEAD!LLVIPER EXT Series light heads are shipped
ASCONTROLLERS"EFORETHESTARTOFYOURINSTALLATIONDETERMINEWHICHLIGHTHEADWILLBETHECONTROLLERANDWHICHLIGHTHEADORHEADSWILLBEFOLLOWERS
LEDS AND LENS COLORS
The LED color and the lens color must match. Either use a clear lens or
match the color of the lens with the LED. Using a lens colored differently

7
Installing the Viper EXT Series LED Light Heads
than the LED color will greatly reduce the light output and reduce the ef-
fectiveness of the light for emergency signaling purposes.
Failure to follow this warning may result in personal injury or death to you
or others.
SET ONLY ONE CONTROLLER
When putting together systems of VIPER EXT light heads, ensure there is
only one controller light head. If more than one light head in a system is a
controller, the follower light heads will malfunction.
4OCONVERTALIGHTHEADFROMCONTROLLERTOFOLLOWER!PPLY6DC"!4TOTHELIGHTHEADSREDWIRE#ONNECTTHEBLACKWIRETONEGATIVEGROUNDPOWER'.$(OLDTHEWHITEPATTERNSELECTIONWIRETO6DC"!4UNTILTHELIGHTHEADmASHES7AITONESECONDANDTHENREMOVETHEWHITEWIREFROM"!44HELIGHTGOESTOFULLPOWERSTEADYBURNFORABOUTTWOSECONDSANDTHENTOLOWPOWERSTEADYBURN#OMPLETETHECONVERSIONBYCONNECTINGTHELIGHTHEADTOACONTROLLERLIGHThead as shown in Figure 3ONPAGE9OUCANCONVERTAFOLLOWERBACKTOACONTROLLERBYREPEATINGSTEPSTHOUGHMounting the VIPER EXT to a Vehicle from the Front
ROOF SUPPORT STRUCTURE
There is a roof support member that spans the distance between the driver’s
and passenger’s side. DO NOT DRILL THROUGH THIS MEMBER! Ad-
just any hole locations until the holes can be drilled without going through
this support.
Failure to follow this warning will weaken the roof of the vehicle and may
lead to an increased chance of bodily injury or death in a roll over accident.
LOCATING OPERATOR CONTROLS
Locate the light system controls so the VEHICLE and CONTROLS can be
operates safely under all driving conditions.
Failure to heed this warning could result in driver distraction or driver er-
ror while operating the vehicle.

8
Installing the Viper EXT Series LED Light Heads
AIRBAG DEPLOYMENT
Do not install equipment or route wiring in the deployment path of an
airbag.
Failure to observe this warning will reduce the effectiveness of the air bag, or
potentially dislodge the equipment, causing serious injury to you or others.
DRIVER VISION
Do not install the light in a location that will obstruct or impair the driver’s
vision. Always locate the light out of direct view of the driver and test the
system to make sure excessive stray light from this light does not impair the
driver’s vision. Make sure you minimize both direct light and reflected light
from the driver’s vision.
Failure to follow this warning could result in injury or death.
DRILLING PRECAUTIONS
Before drilling holes, check the area into which you plan to drill to ensure
you do not damage vehicle components while drilling. All drilled holes
should be deburred and all sharp edges should be smoothed. All wires going
through drilled holes should be protected by a grommet or convolute/split-
loom tubing.
The VIPER EXTISDESIGNEDTOBEMOUNTEDHORIZONTALLYPREFERABLYWITHTHE,%$SUP4OMOUNTTHEVIPER EXT,%$MODULETOTHEVEHICLEFROMTHEFRONTWITHTHEBEZELANDGASKET$ETERMINETHEMOUNTINGLOCATIONFORTHEVIPER EXT module.
5SINGTHEGASKETASATEMPLATESCRIBETHELOCATIONSOFTHEOUTERHOLESONTHEmounting surface.
3CRIBEAWIREROUTINGHOLELOCATIONONTHEMOUNTINGSURFACEINTHECENTERof the gasket.
5SEADRILLBITTODRILLTWOINCHHOLESATTHESCRIBEDMOUNTINGhole locations.
$RILLAINCHHOLEATTHEWIREROUTINGLOCATION
0REPARETHEHOLEFORTHEWIRESBYREMOVINGALLBURRSANDSHARPEDGESANDinserting grommets.

9
Installing the Viper EXT Series LED Light Heads
7. Route the wires from the module through the hole in the gasket and mount-
INGSURFACEFigure 15SEGROMMETSWIRETIESLOOMSANDCABLEMOUNTSNOTSUPPLIEDASNEEDEDTOSECUREANDPROTECTTHEWIRING
Figure 1: Mounting the VIPER EXT from the front
0LACETHEMOUNTINGBEZELOVERTHEMODULEANDSECUREITTOTHEMOUNTINGSURFACEWITHTHESHEETMETALSCREWSPROVIDEDMounting the VIPER EXT to a Vehicle from the Back
ROOF SUPPORT STRUCTURE
There is a roof support member that spans the distance between the driver’s
and passenger’s side. DO NOT DRILL THROUGH THIS MEMBER! Ad-
just any hole locations until the holes can be drilled without going through
this support.
Failure to follow this warning will weaken the roof of the vehicle and may
lead to an increased chance of bodily injury or death in a roll over accident.
LOCATING OPERATOR CONTROLS
Locate the light system controls so the VEHICLE and CONTROLS can be
operates safely under all driving conditions.
Failure to heed this warning could result in driver distraction or driver er-
ror while operating the vehicle.
GASKET
VIPER EXT LED
LIGHT HEAD
MOUNTING BEZEL
#10 SCREWS

10
Installing the Viper EXT Series LED Light Heads
AIRBAG DEPLOYMENT
Do not install equipment or route wiring in the deployment path of an
airbag.
Failure to observe this warning will reduce the effectiveness of the air bag, or
potentially dislodge the equipment, causing serious injury to you or others.
DRIVER VISION
Do not install the light in a location that will obstruct or impair the driver’s
vision. Always locate the light out of direct view of the driver and test the
system to make sure excessive stray light from this light does not impair the
driver’s vision. Make sure you minimize both direct light and reflected light
from the driver’s vision.
Failure to follow this warning could result in injury or death.
DRILLING PRECAUTIONS
Before drilling holes, check the area into which you plan to drill to ensure
you do not damage vehicle components while drilling. All drilled holes
should be deburred and all sharp edges should be smoothed. All wires going
through drilled holes should be protected by a grommet or convolute/split-
loom tubing.
The VIPER EXTISDESIGNEDTOBEMOUNTEDHORIZONTALLYPREFERABLYWITHTHE,%$SUP4OMOUNTTHEVIPER EXT,%$MODULETOTHEVEHICLEFROMTHEBACKWITHOUTABEZELANDGASKET$ETERMINETHEMOUNTINGLOCATIONFORTHEVIPER EXT module.
5SINGTHEGASKETASATEMPLATESCRIBETHELOCATIONSOFTHEINNERHOLESONTHEmounting surface.
3CRIBEAWIREROUTINGHOLELOCATIONONTHEMOUNTINGSURFACEINTHECENTERof the gasket.
5SEADRILLBITTODRILLTWOINCHHOLESATTHESCRIBEDMOUNTINGhole locations.
$RILLAINCHHOLEATTHEWIREROUTINGLOCATION
0REPARETHEHOLEFORTHEWIRESBYREMOVINGALLBURRSANDSHARPEDGESANDinserting grommets.

11
Installing the Viper EXT Series LED Light Heads
7. Route the wires from the module through the hole in the mounting surface
Figure 25SEGROMMETSWIRETIESLOOMSANDCABLEMOUNTSNOTSUP-
PLIEDASNEEDEDTOSECUREANDPROTECTTHEWIRING
Figure 2: Mounting the VIPER EXT from the rear
3ECURETHEMODULEFROMTHEBACKWITHOUTTHEGASKETANDBEZELTOTHEmounting surface with the sheet-metal screws provided.
Wiring the VIPER EXT in the Vehicle
WIRING PRECAUTION
Never attach both the orange wire AND the yellow wire from the CON-
TROLLER light head to the same FOLLOWER light head. Connecting
both signal wires to the same FOLLOWER will cause the light heads to
malfunction.
REVERSE POLARITY / MISWIRING
Reverse polarity or incorrect voltage may damage the light. To avoid dam-
age to the light, ensure that the battery voltage is the same as the voltage
rating of the light and that the correct polarity is observed. If you are con-
necting to a cigarette lighter plug, connect the positive wire to the center
terminal and connect the negative wire to the outer terminal.
Make the connections shown in Figure 3ONPAGE&ORSINGLELIGHTHEADAP-
PLICATIONSANDAPPLICATIONSUSINGALTERNATIVEmASHINGCONTROLSUCHASA&EDERALSignal INTELLI-FLASHÍCUTANDSEALTHEORANGEANDYELLOWVIPER EXT wires.
VIPER EXT LED
LIGHT HEAD
MOUNTING
SURFACE
#8 SCREWS

12
Installing the Viper EXT Series LED Light Heads
FUSE ELECTRICAL SOURCES
Always fuse current/voltage sources with a fuse connected near the power
source. Be sure that the fuse is properly rated to protect the electrical load,
the wiring and the connectors used in the circuit.
Failure to follow this notice could result in vehicle or equipment damage.
IMPORTANT9OUMUSTPLACEAFUSEINLINEWITHTHEPOWERCONNECTION&ORSYSTEMSUPTOFOURLIGHTHEADSYOUMUSTUSEA!FUSE&ORSYSTEMSWITHMORETHANFOURLIGHTHEADSYOUMUSTUSEA!FUSE4HEMAXIMUMCURRENTDRAWPER6IPER%84MODULEIS!)FYOUAREUSINGMORETHANEIGHTHEADSCHOOSETHEFUSEBASEDUPONTHEMAXIMUMCURRENTDRAWTIMESTHENUMBEROFHEADS
290A6093
ALTERNATING
12 Vdc (+BAT)
RED RED
CONTROLLER
LIGHT HEAD
ORG ORG
BLACK BLACK
FOLLOWER
LIGHT HEAD
GROUND (–GND)
FUSE*
SYCHRONIZED
12 Vdc (+BAT)
CONTROLLER
LIGHT HEAD
RED RED
YELLOW YELLOW
BLACK BLACK
FOLLOWER
LIGHT HEAD
GROUND (–GND)
FUSE*
* 5 A FUSE FOR UP TO 4 LIGHT HEADS; 10 A FUSE FOR MORE THAN 4 LIGHT HEADS
Figure 3: Wiring from one controller to one follower

13
Maintaining the Viper EXT Series LED Light Heads
Selecting a Flash Pattern
7HENTHELIGHTHEADSARECONNECTEDINACONlGURATIONTHECONTROLLER,%$LIGHTHEADCANBEUSEDTOCONTROLTHEmASHPATTERNOFTHEENTIRESYSTEM
4OSELECTAmASHPATTERN
1. Touch and remove the white pattern-selection wire from the controller
LIGHTHEADTO6DC"!4ASMANYTIMESASNEEDEDTODISPLAYTHEPAT-
tern you want.
7HENlNISHEDCUTANDSEALTHEWHITEWIRE
Table1: Flash patterns for VIPER EXT Series LED Light Heads
Flash
Pattern Description
Flash
Pattern Description
1 Null (off) 14 75 FPM Double
2 79 FPM Power Quad* 15 150 FPM Triple
3 150 FPM Single 16 75 FPM Triple
4 151 FPM Single 17 5 Single @ 680 FPM
4 Single @ 216 FPM
5 74 FPM Single* 18 4 Single @ 570 FPM
3 Single @ 246 FPM
6 75 FPM Single* 19 3 Single @ 460 FPM
2 Quad @ 75 FPM
7 240 FPM Single 20 Progressive (flashes
start slow and increase
in speed)
8 241 FPM Single 21 4 Single @ 154 FPM
2 Quad @ 75 FPM
9 240 FPM Double 22 Random
10 241 FPM Double 23 3 quick flashes, then
stays in Steady Burn
11 150 FPM Double 24 FedPulse 75
12 151 FPM Double 25 Steady Burn
13 74 FPM Double
*Conforms to CCR Title 13
Note: Single, Double, and Quad refer to the number of flashing intervals.

14
Maintaining the Viper EXT Series LED Light Heads
Maintaining the VIPER EXT Series LED Light Heads
Periodically cleaning the VIPER EXT lenses using proper procedures and compat-
IBLECLEANERSWILLPROLONGTHEIRSERVICELIFE4HEREARENOUSERSERVICEABLEPARTSCONTAINEDWITHINTHELIGHTMODULEHOWEVERyou can order replacements for mounting hardware.
Cleaning the Light Heads
CRAZING/CHEMICALS
Crazed, cracked or faded domes or reflectors reduce the light output and
the effectiveness of the lighting system. Domes or lenses showing this type
of aging must be replaced.
Failure to follow this warning may result in bodily injury or death to you
or others.
USE PROPER CLEANING AGENTS
Do not use cleaning agents that cause crazing such as strong detergents, sol-
vents, or petroleum products. If crazing of lenses does occur, reliability of
the light for emergency signaling may be reduced until lenses are replaced
Failure to follow this warning may result in bodily injury or death to you
or others.
2INSETHEMOUNTINGBEZELANDLENSESWITHLUKEWARMWATERTOLOOSENDIRTANDDEBRIS5SEAMILDSOAPLUKEWARMWATERANDASOFTCLOTHTOGENTLYCLEANTHEPLAS-
TICSURFACES4OAVOIDDAMAGINGTHELENSESDONOTUSEHEAVYPRESSUREORCLEANERSTHATARECAUSTICABRASIVEORPETROLEUMBASED3. Rinse and dry the plastic surfaces with a soft cloth to prevent water spot-
ting.
4OREMOVElNESCRATCHESANDHAZEUSEASPECIALTYPLASTICCLEANERPOLISHSUCHAS0LEXUS§ANDASOFTCLOTH9OUCANALSOUSEAHIGHQUALITYAUTOMOTIVEPASTECLEANERWAXTHATISNONABRASIVE

15
Maintaining the Viper EXT Series LED Light Heads
Replacing the Mounting Hardware
&ORSERVICESUPPORTORREPLACEMENTPARTSCONTACTTHE&EDERAL3IGNAL3ERVICE$EPARTMENTATEMPSERVICEINFO FEDSIGCOMORCALLAM to
5 PM-ONDAYTHROUGH&RIDAY#4Table 2: VIPER EXT replacement parts
Description Part Number
Mounting Bezel, VIPER EXT 8613147
Mounting Gasket, VIPER EXT 8613148
Screws, Bezel, #10 7011182A-12
Screws, w/o Bezel 7011193-06

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