Vintage 551170 User manual

18865 GOLL ST
.- SANANTONIO, TX. - 78266ph.210-654-7171 - fax [phone]
1969-70 MUSTANG
w/o FACTORY AIR GEN IV
551170
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 1 OF 26

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COVER
TABLE OF CONTENTS
PACKING LIST/ PARTS DISCLAIMER
INFORMATION PAGE
WIRING NOTICE
ENGINE COMPARTMENT / PASSENGER COMPARTMENT
FIGURES 1 & 2
DEFROST DUCT / FRESH AIR CAP & DRIVER AND PASSENGER SIDE
LOUVER INSTALLATION
FIGURES 3 & 4, 4a
EVAPORATOR INSTALLATION
FIGURES 5,5a & 6
FIREWALL COVER INSTALLATION
FIGURES 7 & 7a
CENTER LOUVER INSTALLATION
FIGURES 8 & 8a
DRAIN HOSE INSTALLATION & LUBRICATING O-RINGS, STANDARD HOSE KIT
& MODIFIED A/C HOSE KIT
FIGURES 9 & 10
HEATER HOSE & HEATER CONTROL VALVE INSTALLATION
FIGURE 11
A/C & HEATER HOSE ROUTING
FIGURE 12
FINAL STEPS & GLOVE BOX INSTALLATION
FIGURES 13 & 13a
DUCT HOSE ROUTING
FIGURE 14
EVAPORATOR HARD LINE AND BRACKET INSTALLATION
FIGURE 15
WIRING DIAGRAM
OPERATION OF CONTROLS.
TROUBLE SHOOTING
TROUBLE SHOOTING CONT.
DRIVER SIDE LOUVER TEMPLATE
PASSENGER SIDE LOUVER TEMPLATE
CENTER LOUVER TEMPLATE
FIREWALL COVER HOLE TEMPLATE
EVAPORATOR KIT PACKING LIST
GEN IV WIRING CONNECTION INSTRUCTIONS
Table of Contents
1969-70 MUSTANG w/o AC GEN IV
2
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 2 OF 26

** BEFORE BEGINNING INSTALLATION OPEN ALL PACKAGES AND CHECK CONTENTS OF SHIPMENT.
PLEASE REPORT ANY SHORTAGES DIRECTLY TO VINTAGE AIR WITHIN 15 DAYS. AFTER 15 DAYS,
VINTAGE AIR WILL NOT BE RESPONSIBLE FOR MISSING OR DAMAGED ITEMS.
EVAPORATOR KIT PACKING LIST EVAPORATOR KIT
551170
No. QTY. PART No. DESCRIPTION
1.
2.
1
1
1
2
69-70 MUSTANG
EVAP. SUB CASE
763069
763069
781069
69-70 MUSTANG EVAP. SUB CASE
1969-70 MUSTANG w/o AC ACC. KIT
ACCESSORY KIT
781069 NOTE: IMAGES MAY NOT DEPICT ACTUAL PARTS AND QUANTITIES.
REFER TO PACKING LIST FOR ACTUAL PARTS AND QUANTITIES
3
1969-70 MUSTANG w/o AC GEN IV
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 3 OF 26
F
A
N
DASH
FLR DEF
HOT
COLD

IMPORTANT NOTICE-PLEASE READ
FOR MAXIMUM SYSTEM PERFORMANCE VINTAGE AIR RECOMMENDS THE FOLLOWING:
LUBRICANT CAPACITIES:
134a SYSTEM R-12 SYSTEM
CHARGE WITH 2.0 lbs. OF REFRIGERANT
CHARGE WITH 1.8 lbs.
(1lbs. 12ozs) OF REFRIGERANT
NEW COMPRESSOR - NO ADDITIONAL OIL NEEDED
USED COMPRESSOR - CONSULT VINTAGE AIR
SERVICE INFO:
SAFETY SWITCHES:
ATTENTION: SYSTEM COMPONENTS: THE COMPRESSOR, EVAPORATOR, CONDENSER & DRIER ARE CAPPED.
CAPS MAY BE UNDER PRESSURE WITH DRY NITROGEN; BE CAREFUL REMOVING CAPS. DO NOT REMOVE CAPS
PRIOR TO INSTALLATION. REMOVING CAPS PRIOR TO INSTALLATION WILL CAUSE COMPONENTS TO COLLECT
MOISTURE AND LEAD TO PREMATURE FAILURE AND REDUCED PERFORMANCE.
EVACUATE THE SYSTEM FOR 35-45 MINUTES WITH SYSTEM COMPONENTS (DRIER, COMPRESSOR, EVAPORATOR
AND CONDENSER) AT A TEMPERATURE OF AT LEAST 85° F. ON A COOL DAY THE COMPONENTS CAN BE HEATED
WITH A HEAT GUN OR BY RUNNING THE ENGINE WITH THE HEATER ON BEFORE EVACUATING. LEAK CHECK
AND CHARGE TO SPECIFICATIONS.
YOUR VINTAGE AIR SYSTEM IS EQUIPPED WITH A BINARY PRESSURE SAFETY SWITCH. A BINARY SWITCH
(11078-VUS) DISENGAGES THE COMPRESSOR CLUTCH IN CASE OF EXTREME LOW PRESSURE CONDITION
(REFRIGERANT LOSS) OR EXCESSIVELY HIGH HEAD PRESSURE (406 PSI), TO PREVENT COMPRESSOR DAMAGE
OR HOSE RUPTURE. A TRINARY SWITCH (11076-VUS) COMBINES HI/LO PRESSURE PROTECTION WITH AN
ELECTRIC FAN OPERATION SIGNAL AT 254 PSI., AND MAY BE SUBSTITUTED FOR USE WITH ELECTRIC
CONDENSER FANS. COMPRESSOR SAFETY SWITCHES ARE EXTREMELY IMPORTANT SINCE AN A/C SYSTEM
RELIES ON REFRIGERANT TO CARRY LUBRICATION THROUGH THE SYSTEM.
THIS KIT DOES NOT CONTAIN HEATER HOSE. YOU MUST PURCHASE 8 FEET OF 5/8” DIA.
HEATER HOSE FROM VINTAGE AIR(31800-VUD) OR FROM YOU LOCAL PARTS RETAILER
VINTAGE AIR SYSTEMS ARE DESIGNED TO OPERATE WITH R134a or R-12
REFRIGERANT ONLY ! USE OF ANY OTHER REFRIGERANTS RISKS A DANGER OF FIRE
AND COULD DAMAGE EITHER YOUR AIR CONDITIONING SYSTEM OR YOUR VEHICLE.
USE OF ANY OTHER REFRIGERANTS WILL VOID ALL WARRANTIES OF
THE AIR CONDITIONING SYSTEM AND COMPONE NTS. USE OF THE PROPER
TYPE AND AMOUNT OF REFRIGERANT IS CRITICAL TO PROPER SYSTEM
OPERATION. VINTAGE AIR RECOMMENDS OUR SYSTEMS BE CHARGED BY
WEIGHT WITH A QUALITY CHARGING STATION OR SCALE.
REFRIGERANT CAPACITIES FOR VINTAGE AIR SYSTEMS
(FOR OTHER SYSTEMS, CONSULT MANUFACTURER GUIDELINES)
1969-70 MUSTANG
w/o FACTORY AIR
4
1969-70 MUSTANG w/o AC GEN IV
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 4 OF 26

THE HEATER CONTROL VALVE IS A NORMALLY OPEN VALVE. IT MUST BE CONNECTED TO
THE ECU TO BLOCK WATER FLOW IN AC MODE.
CARE MUST BE TAKEN WHEN INSTALLING THE COMPRESSOR LEAD, NOT TO SHORT
IT TO GROUND. THE COMPRESSOR LEAD MUST NOT BE CONNECTED TO A CONDENSER
FAN OR ANY OTHER AUXILIARY DEVICE. SHORTING TO GROUND OR CONNECTING
TO A CONDENSER FAN OR ANY OTHER AUXILIARY DEVICE WILL CAUSE SEVERE DAMAGE
TO THE ECU.
SOME VEHICLES MAY HAVE HAD SOME OR ALL OF THEIR RADIO INTERFERENCE CAPACITORS
REMOVED. THERE SHOULD BE A CAPACITOR FOUND AT EACH OF THE FOLLOWING LOCATIONS:
1. ON THE POSITIVE TERMINAL OF THE IGNITION COIL
2. IF THERE IS A GENERATOR, ON THE ARMATURE TERMINAL OF THE GENERATOR
3. IF THERE IS A GENERATOR, ON THE BATTERY TERMINAL OF THE VOLTAGE REGULATOR
MOST ALTERNATORS HAVE A CAPACITOR INSTALLED INTERNALLY TO ELIMINATE WHAT IS CALLED
'WHINING' AS THE ENGINE IS REVVED. IF WHINING IS HEARD IN THE RADIO, OR JUST TO BE EXTRA
CAUTIOUS, A RADIO INTERFERENCE CAPACITOR CAN BE ADDED TO THE BATTERY TERMINAL OF
THE ALTERNATOR.
IT IS ALSO IMPORTANT THAT THE BATTERY LEAD IS IN GOOD SHAPE AND THAT THE GROUND
LEADS ARE NOT COMPROMISED. THERE SHOULD BE A HEAVY GROUND FROM THE BATTERY TO
THE ENGINE BLOCK, AND ADDITIONAL GROUNDS TO THE BODY AND TO THE CHASSIS.
IF THESE PRECAUTIONS ARE NOT OBSERVED, IT IS POSSIBLE FOR VOLTAGE SPIKES TO BE PRESENT
ON THE BATTERY LEADS. THESE SPIKES COME FROM IGNITION SYSTEMS, CHARGING SYSTEMS,
AND FROM TURNING SOME OF THE VEHICLE'S OTHER SYSTEMS ON AND OFF. MODERN
COMPUTER OPERATED EQUIPMENT CAN BE SENSITIVE TO VOLTAGE SPIKES ON THEIR POWER
LEADS, WHICH CAN CAUSE UNEXPECTED RESETS, STRANGE BEHAVIOR, AND MAY ALSO CAUSE
PERMANENT DAMAGE.
VINTAGE AIR STRIVES TO HARDEN THEIR PRODUCTS AGAINST THESE TYPES OF ELECTRICAL NOISE,
BUT THERE IS A POINT WHERE A VEHICLE'S ELECTRICAL SYSTEM CAN BE DEGRADED SO MUCH
THAT NOTHING CAN HELP.
RADIO INTERFERENCE CAPACITORS SHOULD BE AVAILABLE AT MOST AUTO & TRUCK PARTS
SUPPLIERS. THEY TYPICALLY ARE CYLINDRICAL IN SHAPE, A LITTLE OVER AN INCH LONG, A LITTLE
OVER A HALF INCH IN DIAMETER, THEY HAVE A SINGLE LEAD COMING FROM ONE END OF THE
CYLINDER WITH A TERMINAL ON THE END OF THE WIRE, AND THEY WILL HAVE A MOUNTING CLIP
WHICH IS SCREWED INTO A GOOD GROUND ON THE VEHICLE. THE SPECIFIC VALUE OF THE
CAPACITANCE IS NOT TOO SIGNIFICANT, IN COMPARISON TO IGNITION CAPACITORS THAT ARE
MATCHED WITH THE COIL TO REDUCE PITTING OF THE POINTS.
IMPORTANT WIRING NOTICE-PLEASE READ
G
WHEN INSTALLING GROUND LEADS ON EN IV SYSTEMS, THE BLOWER CONTROL GROUND
AND ECU GROUND MUST BE CONNECTED DIRECTLY TO THE NEGATIVE BATTERY POST.
IMPORTANT WIRING NOTICE-PLEASE READ
5
1969-70 MUSTANG w/o AC GEN IV
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 5 OF 26

REMOVE THE FOLLOWING:
REMOVE DASH PAD, INSTRUMENT PANEL, PASSENGER SIDE PANEL AND LOWER PASSENGER SIDE
DASHBOARD (RETAIN SCREWS) SEE FIGURE 1.
GLOVE BOX (RETAIN) SEE FIGURE 1.
HEATER ASSEMBLY AND ALL RELATED DUCTING (DISCARD), RETAIN SCREWS.
SEE FIGURE 2.
CONTROL PANEL ASSEMBLY (RETAIN CONTROL PANEL) SEE FIGURE 1.
REFER TO CONTROL PANEL CONVERSION KIT INSTRUCTIONS FOR INSTALLATION OF CONTROLS.
REMOVE OEM DEFROST DUCT ASM SEE FIGURE 2.
NOTE: REMOVAL OF DASHBOARD REQUIRED TO INSTALL THE EVAPORATOR. VINTAGE AIR
RECOMMENDS THAT YOU UTILIZE THE FACTORY SERVICE MANUAL WHEN YOU DISASSEMBLE
AND REASSEMBLE THE DASHBOARD.
PASSENGER COMPARTMENT
GLOVE
BOX
PASSENGER SIDE
PANEL
LOWER PASSENGER
SIDE DASHBOARD
DASH PAD
6
1969-70 MUSTANG w/o AC GEN IV
CONTROL
PANEL
INSTRUMENT
PANEL
DEFROST DUCT
ASM
HEATER
ASSEMBLY
FIGURE 2
FIGURE 1
ENGINE COMPARTMENT
BATTERY (RETAIN).
DRAIN RADIATOR
HEATER HOSES(DISCARD).
REMOVE THE FOLLOWING:
CONDENSER ASSEMBLY & INSTALLATION
REFER TO SEPARATE INSTRUCTIONS INCLUDED WITH
THE CONDENSER KIT TO INSTALL THE CONDENSER.
BINARY SWITCH INSTALLATION ( REFER TO CONDENSER INSTRUCTIONS)
REFER TO SEPARATE INSTRUCTIONS INCLUDED WITH THE
BRACKET KIT TO INSTALL THE COMPRESSOR BRACKET.
COMPRESSOR & BRACKETS
BEFORE STARTING THE INSTALLATION, CHECK THE FUNCTION
OF THE VEHICLE (HORN, LIGHTS,ETC.) FOR PROPER OPERATIONS.
STUDY THE INSTRUCTIONS, ILLUSTRATIONS, & DIAGRAMS.
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 6 OF 26

TEMPLATE
DEFROST DUCT/ FRESH AIR CAP INSTALLATION
INSTALL DEFROST DUCT UNDER DASH AS SHOWN IN FIGURE 3 BELOW. SECURE USING OEM NUTS
w/ (3) 3/16 SAE FLAT WASHERS.
HOLD FRESH AIR CAP UNDER DASH AND MARK THE (3) MOUNTING HOLES.
DRILL (3) 1/8” MOUNTING HOLES UNDER DASH.
A
PPLY A 1/4” BEAD OF SILICONE AROUND THE BACK SIDE OF THE FRESH AIR CAP AS SHOWN IN
FIGURE 3, BELOW.
SECURE FRESH AIR CAP TO FRESH AIR HOLE USING (3) #10 X 1/2 SHEET METAL SCREWS AS SHOWN
IN FIGURE 3 BELOW.
7
1969-70 MUSTANG w/o AC GEN IV
DEFROST
DUCT
605169
(3) 3/16
SAE FLAT
WASHERS
(3) OEM
STAR NUTS
DRILL
HOLES
FRESH AIR
CAP
605174
(3) 10 X 1/2
SHEET METAL
SCREW
SILICONE
DRIVER AND PASSENGER SIDE LOUVER INSTALLATION
CUT OUT TEMPLATE PROVIDED ON PAGE 22. PLACE THE DRIVER SIDE TEMPLATE ON THE DASH BY
ALIGNING THE LEFT SIDE OF THE TEMPLATE AGAINST THE EDGE OF THE DASH, THEN ALIGN THE
BOTTOM OF THE TEMPLATE TO BOTTOM OF DASH AS SHOWN IN FIGURE 4.
CUT OUT TEMPLATE PROVIDED ON PAGE 23. PLACE THE PASSENGER SIDE TEMPLATE ON THE DASH
BY ALIGNING THE RIGHT SIDE OF THE TEMPLATE AGAINST THE EDGE OF THE DASH, THEN ALIGN
THE BOTTOM OF THE TEMPLATE TO BOTTOM OF DASH AS SHOWN IN FIGURE 4.
ONCE TEMPLATE IS ALIGNED CORRECTLY, USE A CENTER PUNCH TO MARK THE HOLE ON THE
DASH. REMOVE TEMPLATE. USE A 2 3/4 HOLE SAW TO CUT HOLE IN DASH, SEE FIGURE 4 BELOW.
INSTALL LOUVERS IN DASH AS SHOWN IN FIGURE 4a BELOW.
FIGURE 3
FIGURE 4 FIGURE 4a
DRILL 2 3/4
HOLE
DRIVER SIDE
PASSENGER SIDE
DRILL 2 3/4
HOLE
LOUVER
490535
LOUVER BEZEL
605181
LOUVER BRKT
642075
2 1/2 HOSE
ADAPTER
DASH
TEMPLATE
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 7 OF 26

EVAPORATOR INSTALLATION
ON A WORK BENCH, INSTALL EVAPORATOR REAR BRACKET AND HARDLINES WITH PROPERLY LUBRICATED O-RINGS.
(SEE FIGURE 10, PAGE 11, AND FIGURE 15, PAGE 16.)
REMOVE 2 OEM HEATER PLUGS IN FIREWALL, SEE FIGURE 7 PAGE 9.
INSTALL FRONT MOUNTING BRACKET ON EVAPORATOR USING (2) 1/4-20 X 1/2 HEX BOLTS AND TIGHTEN AS
SHOWN IN FIGURE 5 BELOW.
LIFT EVAPORATOR UNIT UP UNDER THE DASHBOARD SEE FIGURE 6. SECURE LOOSELY TO THE FIREWALL FROM THE
ENGINE COMPARTMENT SIDE USING (2) 1/4-20 NUT AND WASHER, SEE FIGURE 6 BELOW.
USING (2) #14 X 3/4 SHEET METAL SCREW w/ 1/4 FLAT WASHER SECURE THE FRONT EVAPORATOR MOUNTING
BRACKET TO THE INNER COWL. SEE FIGURE 6 BELOW.
VERIFY THAT EVAPORATOR UNIT IS LEVEL AND SQUARE TO THE DASH, THEN TIGHTEN ALL MOUNTING BOLTS.
(NOTE: TIGHTEN THE BOLT ON FIREWALL FIRST, THEN THE FRONT MOUNTING BRACKET SCREWS.)
8
1969-70 MUSTANG w/o AC GEN IV
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 8 OF 26
USE TEMPLATE PROVIDED ON PAGE 25. ALIGN TEMPLATE WITH OEM BLOWER MOTOR MOUNTING
HOLES & DRILL (6) 3/16 HOLES IN FIREWALL FROM INSIDE UNDER DASH, SEE FIGURE 5a.
FIGURE 5
FIGURE 5a
EVAP FRONT
BRKT
641271
DRIVER SIDE EVAP
MOUNTING HOLE
FIGURE 6
(2) #14 X 3/4
SHEETMETAL
SCREW
w/ 1/4
FLAT WASHER
PASSENGER SIDE EVAP
MOUNTING HOLE
SBY
1969-70 MUSTANG w/o AC
FIREWALL COVE R
HOLE TEMPL ATE
THIS SIDE IN SIDE OF CAR
(6) 3/16
HOLES
OEM HEATER
HOLE
BLOWER MOTOR
MOUNTIN G
HOLE
BLOWER
MOTOR
MOUNTIN G
HOLE
BLOWER
MOTOR
MOUNTIN G
HOLE
BLOWER
MOTOR
MOUNTIN G
HOLE
(4) ALIGNMENT HOLES
OEM HEATER
LINE HOLES
DRIVER SIDE EVAP
MOUNTING HOLE
PASSENGER SIDE EVAP
MOUNTING HOLE

FIREWALL COVER INSTALLATION
INSTALL (3) GROMMETS ON FIREWALL COVER AS SHOWN IN FIGURE 7, BELOW.
APPLY A 1/4 BEAD OF SILICONE AROUND THE BACK SIDE OF THE FIREWALL COVER AS SHOWN IN
FIGURE 7a, BELOW.
SECURE FIREWALL COVER TO FIREWALL USING (6) #14 X 3/4 SHEET METAL SCREWS, SEE FIGURE 7,
BELOW.(NOTE: FIREWALL COVER INSTALLS ON ENGINE SIDE OF FIREWALL.)
9
1969-70 MUSTANG w/o AC GEN IV
FIREWALL
COVER
642071
(6) #14 X 3/4
SHEET METAL
SCREWS
GROMMET
33144-VUI
GROMMET
33137-VUI
GROMMET
33135-VUI
SILICONE
OEM
HOLES
OEM
HEATER HOLE
IN FIREWALL
OEM HEATER
LINE HOLES
(REMOVE PLUG)
(4) OEM
BLOWER MOTOR
MOUNTING HOLES
ENGINE
COMPARTMENT
SIDE OF
FIREWALL
FIGURE 7a
FIGURE 7
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 9 OF 26

CENTER LOUVER INSTALLATION (OPTION 1)
UNDER DASH CENTER LOUVER INSTALLATION (OPTION 2)
10
1969-70 MUSTANG w/o AC GEN IV
ASSEMBLED VIEW
TEMPLATE
CUT OUT
CENTER LOUVER
ASM
590070
UNDER DASH
LOUVER
FIGURE 8
FIGURE 8a
CUT OUT CENTER LOUVER TEMPLATE PROVIDED ON PAGE 24. ALIGN
CENTER LOUVER TEMPLATE ON DASH PAD AS SHOWN IN
FIGURE 8a.
MARK CENTER LOUVER OPENING ON DASH PAD. ONCE
CENTER LOUVER OPENING IS MARKED REMOVE TEMPLATE
AND CAREFULLY CUT OUT OPENING IN DASH PAD.
INSTALL CENTER LOUVER ASM AS SHOWN IN
FIGURE 8.
INSTALL UNDER DASH LOUVERS USING (3) #8 X 1/2 PAN HEAD SCREWS.
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 10 OF 26

11
1969-70 MUSTANG w/o AC GEN IV
LOCATE EVAPORATOR DRAIN ON BOTTOM OF EVAPORATOR CASE.
IN-LINE WITH THE DRAIN, LIGHTLY MAKE A MARK ON
THE FIREWALL. MEASURE ONE INCH DOWN AND DRILL
A 5/8 HOLE THROUGH THE FIREWALL. SEE FIGURE 9
INSTALL DRAIN HOSE TO BOTTOM OF EVAPORATOR
UNIT AND ROUTE THROUGH FIREWALL.
SEE FIGURE 9.
DRAIN HOSE INSTALLATION
FIGURE 9
DRAIN
DRAIN
HOSE
LUBRICATING O-RINGS
#6 O-RING
#8O-RING #10O-RING
O-RING
TWIST WITH
THIS
WRENCH
HOLD WITH
THIS
WRENCH
FOR APROPERSEALOF FITTINGS:
INSTALL SUPPLIEDO-RINGSASSHOWN
AND LUBRICATEWITHSUPPLIEDOIL.
O-RING
SUPPLIEDOIL
FOR O-RINGS
O-RING,
SLIDEOVER
MALE INSERTTO
SWAGEDLIP
MALE
INSERT
FEMALE
NUT
FIGURE 10
STANDARD HOSE KIT
LOCATE THE #8 COMPRESSOR A/C HOSE. LUBRICATE (2) #8 O-RINGS (SEE FIGURE 10 ) AND CONNECT
THE 45° FITTING TO THE #8 DISCHARGE PORT ON THE COMPRESSOR. ROUTE THE STR FEMALE w/ 134a
SERVICE PORT FITTING TO THE #8 CONDENSER HARDLINE COMING THROUGH THE RADIATOR CORE SUPPORT.
SEE FIGURE 12, PAGE 13. TIGHTEN EACH FITTING CONNECTION AS SHOWN IN FIGURE 10 ABOVE.
LOCATE THE #10 COMPRESSOR A/C HOSE. LUBRICATE (2) #10 O-RINGS AND CONNECT THE 90° FEMALE
w/ 134a SERVICE PORT FITTING TO THE #10 SUCTION PORT ON THE COMPRESSOR, ROUTE THE 135° FEMALE
FITTING TO THE #10 EVAPORATOR HARDLINE COMING THROUGH THE FIREWALL. SEE FIGURES 11, PAGE 12 &
FIGURE 12, PAGE 13. TIGHTEN EACH FITTING CONNECTION AS SHOWN IN FIGURE 10 ABOVE.
(NOTE: WRAP THE #10 FITTING CONNECTIONS WITH PRESS TAPE. SEE FIGURE 11, PAGE 12 & FIGURE 12, PAGE 13.
LOCATE THE #6 EVAP/DRIER A/C HOSE. LUBRICATE (2) #6 O-RINGS AND CONNECT THE STR FEMALE FITTING
TO THE #6 DRIER HARDLINE COMING THROUGH THE RADIATOR CORE SUPPORT. ROUTE THE 90° FEMALE
FITTING TO THE #6 EVAPORATOR HARDLINE COMING THROUGH THE FIREWALL. SEE FIGURES 11, PAGE 12 &
FIGURE 12, PAGE 13. TIGHTEN EACH FITTING CONNECTION AS SHOWN IN FIGURE 10 ABOVE.
, ABOVE
USE (6) TIE WRAPS TO SECURE THE #6 A/C HOSE TO THE EXPORT BRACE AS SHOWN IN FIGURE 12, PAGE 13.
REFER TO SEPARATE INSTRUCTIONS INCLUDED WITH MODIFIED HOSE KIT.
MODIFIED A/C HOSE KIT
1”
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 11 OF 26

HEATER HOSE & HEATER CONTROL VALVE INSTALLATION
ROUTE A PIECE OF HEATER HOSE FROM THE WATER PUMP TO THE HEATER LINE COMING THROUGH THE FIREWALL
AS SHOWN IN FIGURE 11, BELOW. SECURE USING HOSE CLAMPS.
ROUTE A PIECE OF HEATER HOSE FROM THE INTAKE TO THE HEATER LINE COMING THROUGH THE FIREWALL
AS SHOWN IN FIGURE 11 BELOW. NOTE: INSTALL HEATER CONTROL VALVE IN-LINE WITH INTAKE MANIFOLD
(PRESSURE SIDE) HEATER HOSE, SECURE USING HOSE CLAMPS AS SHOWN IN FIGURE 11 BELOW.
NOTE PROPER FLOW DIRECTION.)
12
1969-70 MUSTANG w/o AC GEN IV
HEATER
HOSE
FIREWALL
COVER
642071 #6 A/C HOSE
#10 SUCTION
HOSE
O-RINGS
PRESS
TAPE FIREWALL
EXPANSION
VALVE
ECU
MODULE
#10 SUCTION
LINE (INSULATED)
FROMEVAPORATOR
TOWATER PUMP
FROM INTAKE
MANIFOLD
FROM HTR CNTRL VLV
TOEVAPORATOR
FIGURE 11
FLOW
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 12 OF 26

(6)TIE
WRAP
#8CONDENSER TO
CORE SUPPORT
HARDLINE
081096
#6 DRIERTO
CORE SUPPORT
HARDLINE
081095
CORE
SUPPORT
INNER
FENDERWELL
NOTE:VINTAGEAIRSYSTEMS REQUIRE
(2)5/8HOSE NIPPLES (NOT SUPPLIED)
1969-70MUSTANG w/o AC GENIV
13
AC &HEATER HOSE ROUTING
COMPRESSOR
SAFETY SWITCH
(BINARY TYPE)
SCREWONDRIER
(REFERTO
CONDENSER
INSTRUCTIONS)
HEATER HOSE
(HEATER CORE/
WATERPUMP)
PRESS
TAPE
#10
SUCTION
HOSE
#6
HOSE
OUT
IN
HEATER HOSE
(HEATERCNTRL
VALVE/INTAKE)
#8
DISCHARGE
HOSE
FIGURE12
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 13 OF 26

GLOVE BOX INSTALLATION
INSTALL GLOVE BOX WITH OEM SCREWS. SEE FIGURE 13.
INSTALL DUCT HOSES AS SHOWN IN FIGURE 14, PAGE 15.
ROUTE A/C WIRES THROUGH 3/8 GROMMENT AS SHOWN ON FIGURE 13a
(12 VOLT/ GROUND/ BINARY SWITCH/ HEATER VALVE).
INSTALL CONTROL PANEL ASM.
PLUG THE WIRING HARNESS IN THE ECU MODULE ON SUB CASE AS SHOWN IN FIGURE 14, PAGE 15
(WIRE ACCORDING TO WIRING DIAGRAM ON PAGE 17 AND 18)
GLOVE BOX INSTALLATION (SEE FIGURE 13)
REINSTALL ALL PREVIOUSLY REMOVED ITEMS (BATTERY).
FILL RADIATOR WITH AT LEAST A 50/50 MIXTURE OF APPROVED ANTIFREEZE AND DISTILLED WATER.IT IS THE
OWNER'S RESPONSIBILITY TO KEEP THE FREEZE PROTECTION AT THE PROPER LEVEL FOR THE CLIMATE IN
WHICH THE VEHICLE IS OPERATED. FAILURE TO FOLLOW ANTIFREEZE RECOMMENDATIONS WILL CAUSE
HEATER CORE TO CORRODE PREMATURELY AND POSSIBLY BURST IN AC MODE AND/OR FREEZING WEATHER,
VOIDING YOUR WARRANTY.
DOUBLE CHECK ALL FITTINGS, BRACKETS AND BELTS FOR TIGHTNESS.
VINTAGE AIR RECOMMENDS THAT ALL AC SYSTEMS BE SERVICED BY A CERTIFIED AUTOMOTIVE AIR
CONDITIONING TECHNICIAN.
EVACUATE THE SYSTEM FOR A MINIMUM OF 45 MINUTES PRIOR TO CHARGING AND LEAK CHECK PRIOR
TO SERVICING.
CHARGE THE SYSTEM TO THE CAPACITIES STATED ON THE INFORMATION PAGE (PAGE 4) OF THIS
INSTRUCTION MANUAL.
SEE OPERATION OF CONTROLS PROCEDURES PAGE 19.
FINAL STEPS
14
1969-70 MUSTANG w/o AC GEN IV
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 14 OF 26
FIGURE 13a
FIGURE 13
GLOVE BOX
FIREWALL
COVER
GROMMET

15
1969-70 MUSTANG w/o AC GEN IV
SBY
DRIVER SIDE
DEF. DUCT
2” x 14”
DRIVER SIDE
LOUVER
2 1/2” x 30”
CENTER LOUVER
DRIVER SIDE
2 1/2” x 32”
CENTER LOUVER
PASS. SIDE
2 1/2” x 32”
PASS. SIDE
DEF. DUCT
2” x 12”
PASS. SIDE
LOUVER
2 1/2” x 32” PLUG
FROM
CONTROL
WIRING
HARNESS
232006-VUR
PLUG
FROM
WIRING
HARNESS
232001-VUR
DUCT HOSE ROUTING
CONTROL PANEL
HARNESS
TO ECU
232006-VUR
FIGURE 14
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 15 OF 26

189125-MUR
1/4 PUSH NUT
BOLT RETAINER
18289-VUB
1/4-20 X 1
COARSE BOLT
BRACKET
#6 LIQUID LINE
081091
EVAPORATOR HARD
LINE INSTALLATION
HEATERLINE
(EVAPTO WATERPUMP)
081094
NOTE:AFTER INSTALLING
# 10SUCTIONLINE
WRAPALL EXPOSED METAL
(FITTINGS& TUBE)
WITH SUPPLIED
PRESS TAPE.
PRESSTAPE
FIGURE 8
HOLDWITH
THIS WRENCH
1/4-20 X 1/2
BOLT
(LOCATED ON
SUB CASE)
TWIST WITH
THIS
WRENCH
FIGURE 15
#10 O-RING
(33859-VUF)
HEATER LINE
(EVAP TO INTAKE)
081093
ECUMODULE
LUBRICATE O-RING
(SEE FIGURE10,
PAGE 11.)
#10SUCTION
LINE
081092
#6
O-RING
(33857-VUF)
PASS SIDE EVAP
REAR BRKT
641272
DRIVER SIDE EVAP
REARBRKT
641273
#10O-RING
(33859-VUF)
1969-70 MUSTANG w/o ACGEN IV
16
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 16 OF 26

17
1969-70 MUSTANG w/o AC GEN IV
WIRING DIAGRAM
85 85
86 86
GROUND
DASH/FLOOR
DEFROST/PLENUM
TEMPERTURE BLEND
COMPRESSOR
30 AMP
BLK
BLK
DK BLU
DK BLU
RED
RED
RED RED RED
RED
RED
RED
GRY
GRN
LT BLUYEL/BLK
GRN
WHT
WHT
WHT
ORA
VIO
VIO
WHT
ORA
GRY
RED
WHT
N/A TACH
DASH LAMP
(NOT USED)
PRGM
JM8
JM9
JM1
JM2
JM6
JM5
JM4
JM3
GRY
BLK
BLK
YEL
VIEWED FROM BOARD TOP SIDE
NOT USED
JF8
TAN
GENIV WIRING DIAGRAM
REVISION B, 2006-05-04
CMPR
= CHASSIS
NOTE:
BATTERY
POS
NEG
BLOWER MOTOR
BAT-POS BLWR-POS
BLWR-NEGBAT-NEG
SHLD SHLD PWM
BSC
GEN-IV ECU
CIRCUIT
BREAKER
HCV
30 30
87 87
RELAY RELAY
HEATER
CONTROL
VALVE
BAT
RUN
IGNITION
+ 12v
SWITCH
WIDE OPEN
THROTTLE
SWITCH
(OPTIONAL)
EVAPORATOR
TEMPERATURE
SENSOR
STEPPER
RED
GRN
GRN
YEL
BLK
BLU
STEPPER
RED
GRN
GRN
YEL
BLK
BLU
STEPPER
RED
GRN
GRN
YEL
BLK
BLU
RED
RED
RED
RED
WHT
WHT
WHT
WHT
WHT/GRN
WHT/YEL
WHT/RED
WHT/BLU NA
DASH
FLR
DEF
FAN
COLD
HOT
JF8
VIEWED FROM
WIRE SIDE
SWITCH CONTACTS
WIDE OPEN THROTTLE
CLOSE ONLY AT
FULL THROTTLE,
WHICH DISABLES
AC COMPRESSOR
OPTIONAL:
BINARY
DRIER
OR TRINARY
SAFETY
SWITCH
WARNING: ALWAYS MOUNT CIRCUIT
BREAKER UNDER THE HOOD IN THE ENGINE
COMPARTMENT AND AS CLOSE TO
THE BATTERY AS POSSIBLE.
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 17 OF 26

HEATER
CONTROL
VALVE RELAY
HEATER
CONTROL
VALVE
REFER TO CONTROL
PANEL INSTRUCTIONS
AND PLUG IN ACCORDINGLY
BINARY
SAFETY
SWITCH
NOTE: IF USING TRINARY
SAFETY SWITCH- REFER TO
WIRING SCHEMATIC SUPPLIED
WITH TRINAY SAFETY SWITCH
FOR PROPER WIRING INSTRUCTIONS
(IGNITION HOT
TERMINAL)
NOTE: CONNECT WHITE
WIRES DIRECTLY TO
( ) BATTERY TERMINAL
CONNECT
CONNECT
BACK SIDE
OF EVAPORATOR
FRONT SIDE
OF EVAPORATOR
CONNECT
(SUPPLIED
GROUND
WIRE, NOT
PART OF
HARNESS)
CIRCUIT BREAKER
30 AMP
CONNECT
CONNECT
CONNECT
CONNECT
CONNECT
NOTE:
MOUNT RELAYS
IN DESIRED
LOCATION
UNDER DASH
NOTE:
YELLOW, ORANGE
& TAN COMING FROM
HARNESS ARE
GRAY WIRES IS USED
FOR PROGRAMING
CONTROLS IF APPLICABLE
NOT USED.
GEN IV WIRING
CONNECTION
INSTRUCTIONS
CONTROL
WIRING
WIRING
HARNESS
HARNESS
A/C
COMPRESSOR
RELAY
GROUND
+
+
-
WHT
GRN
BLUE
BLACK
BLUE
RED
RED
RED
RED
RED
WHT
WHTWHT
WHT
WHT
VIOLET
WHT
WHT
CHASSIS
BATTERY
COMPRESSOR
BAT
RUN
IGNITION
12 V
SWITCH
WARNING:
ALWAYS MOUNT CIRCUIT
BREAKER UNDER THE HOOD
IN THE ENGINE COMPARTMENT
AND AS CLOSE TO THE
BATTERY AS POSSIBLE.
18
1969-70 MUSTANGw/oACGEN IV
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 18 OF 26

OPERATION OF CONTROLS
NOTE: WHEN BATTERY POWER IS FIRST CONNECTED TO THE ECU, THE COMPUTER GOES THROUGH AN INITIALIZATION
SEQUENCE. THIS INITIALIZATION MAY TAKE UP TO 30 SECONDS. DURING INITIALIZATION THE BLOWER WILL NOT OPERATE,
BUT THE DOORS INSIDE THE UNIT WILL BE OPERATING. A LOW BATTERY OR DISCONNECTING THE BATTERY MAY ALSO
TRIGGER A RE-INITIALIZATION. DURING START UP, A LOW BATTERY MAY DROP BELOW 7 VOLTS, TRIGGERING RE-INITIALIZATION.
19
1969-70 MUSTANG w/o AC GEN IV
FLR
FLR
FLR
DASH
DASH
DASH
COLD
COLD
COLD
F
A
N
F
A
N
F
A
N
DEF
DEF
DEF
HOT
HOT
HOT
A/C MODE
HEAT MODE
SYSTEM OFF
BLOWER SPEED
THIS LEVER CONTROLS
THE BLOWER SPEED,
FROM OFF TO HI
THERMOSTAT LEVER
IN A/C MODE SLIDE THE
THERMOSTAT LEVER ALL THE WAY
LEFT TO THE COLD POSITION,
FOR MAXIMUM COOLING
(SLIDE LEVER LEFT OR RIGHT TO
ADJUST DESIRED TEMPERATURE)
MODE
SLIDE THE LEVER TO
THE “DASH” POSITION
LEVER
BLOWER SPEED
SLIDE LEVER UP
TO DESIRED BLOWER SPEED,
FROM OFF TO HI
THERMOSTAT
IN A/C MODE SLIDE THE
THERMOSTAT LEVER ALL THE
WAY LEFT TO THE COLD POSITION
TO ENGAGE COMPRESSOR,
FOR MAXIMUM COOLING
(SLIDE LEVER LEFT OR RIGHT TO
ADJUST DESIRED TEMPERATURE)
LEVER
MODE
SLIDE THE LEVER TO
THE “DASH” POSITION
LEVER
BLOWER SPEED
SLIDE LEVER UP
TO DESIRED BLOWER SPEED,
FROM OFF TO HI
THERMOSTAT
IN HEAT MODE SLIDE THE
THERMOSTAT LEVER ALL THE
WAY RIGHT TO THE HOT POSITION,
FOR MAXIMUM HEATING
((SLIDE LEVER LEFT OR RIGHT TO
ADJUST DESIRED TEMPERATURE)
LEVER
MODE
SLIDE THE LEVER TO
THE “FLR” POSITION
LEVER
FLR
DASH
COLD
F
A
N
DEF
HOT
DEFROST/ DE-FOG MODE
BLOWER SPEED
SLIDE LEVER UP
TO DESIRED BLOWER SPEED,
FROM OFF TO HI
MODE
SLIDE THE LEVER TO
THE “DEF” POSITION
LEVER
THERMOSTAT
IN DEF MODE SLIDE THE
THERMOSTAT LEVER ALL THE WAY
LEFT TO THE COLD POSITION
TO ENGAGE COMPRESSOR.
FOR MAXIMUM COOLING
(SLIDE LEVER LEFT OR RIGHT TO
ADJUST DESIRED TEMPERATURE)
LEVER
BLOWER
SPEED
MODE
LEVER
THERMOSTAT
LEVER
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 19 OF 26

TROUBLE SHOOTING INFORMATION
SYMPTOM CONDITION CHECKS ACTIONS NOTES
1. BLOWER STAYS ON HIGH
SPEED WHEN IGNITION IS ON
NO OTHER FUNCTIONS WORK
CHECK FOR DAMAGED PINS OR WIRES IN CONTROL HEAD PLUG.
VERIFY ALL PINS ARE INSERTED INTO PLUG. INSURE NO PINS ARE BENT OR DAMAGED IN ECU.
CHECK FOR DAMAGED GROUND WIRE (WHITE) IN
CONTROL HEAD HARNESS.
VERIFY CONTINUITY TO CHASSIS GROUND WITH WHITE CONTROL HEAD WIRE AT VARIOUS POINTS.
LOSS OF GROUND ON THIS WIRE WILL RENDER CONTROL HEAD INOPERABLE
ALL OTHER FUNCTIONS WORK
CHECK FOR DAMAGED BLOWER SWITCH OR POT
AND ASSOCIATED WIRING.
SEE BLOWER SWITCH CHECK PROCEDURE
(CONTACT VINTAGE AIR TECH SUPPORT)
BLOWER STAYS ON HIGH SPEED WHEN IGNITION IS ON OR OFF.
UN-PLUG 3 WIRE BSC CONTROL CONNECTOR
FROM ECU. IF BLOWER SHUTS OFF, ECU IS EITHER IMPROPERLY WIRED, OR DAMAGED.
BE SURE SMALL, 20GA. WHITE GROUND WIRE IS CONNECTED TO THE BATTERY GROUND POST. IF IT IS, REPLACE ECU.
UN-PLUG 3 WIRE BSC CONTROL CONNECTOR FROM ECU. IF BLOWER STAYS RUNNING, THE BSC IS EITHER IMPROPERLY WIRED, OR DAMAGED.
CHECK TO INSURE THAT NO BSC WIRING IS DAMAGED OR SHORTED TO VEHICLE GROUND. THE BSC OPERATES THE BLOWER BY GROUND SIDE PWM SWITCHING. THE POSITIVE WIRE TO THE BLOWER WILL ALWAYS BE HOT. IF THE "GROUND" SIDE OF THE BLOWER IS SHORTED TO CHASSIS GROUND, THE BLOWER WILL RUN ON HI.
REPLACE BSC. (THIS WILL REQUIRE EVAPORATOR TO BE REMOVED FROM VEHICLE. )
NO OTHER PART REPLACEMENTS SHOULD BE NECESSARY.
2. COMPRESSOR WILL NOT TURN
ON (ALL OTHER FUNCTIONS
WORK)
SYSTEM IS NOT CHARGED
SYSTEM IS CHARGED
SYSTEM MUST BE CHARGED FOR COMP. TO
ENGAGE.
CHARGE SYSTEM OR BYPASS PRESSURE SWITCH . DANGER- NEVER BYPASS SAFETY SWITCH WITH
ENGINE RUNNING, SERIOUS INJURY CAN RESULT
CHECK FOR FAULTY A/C POT OR ASSOC. WIRING CHECK CONTINUITY TO GROUND ON WHITE CONTROL
HEAD WIRE. CHECK FOR 5V ON RED CONTROL HEAD WIRE.
TO CHECK FOR PROPER POT FUNCTION, CHECK VOLTAGE AT WHITE/BLUE WIRE. VOLTAGE SHOULD BE BETWEEN 0 AND 5V, AND WILL VARY WITH POT LEVER POSITION.
CHECK FOR DISCONNECTED OR FAULTY
(CHECK FOR FAULTY PRESSURE SWITCH)
THERMISTOR.
CHECK TWO PIN CONNECTOR AT ECU
CHECK CONTINUITY ACROSS SWITCH
HOUSING.
DISCONNECTED OR FAULTY THERMISTOR WILL
REPLACE SWITCH
CAUSE COMPRESSOR TO BE DISABLED.
3. COMPRESSOR WILL NOT TURN
OFF (ALL OTHER FUNCTIONS
WORK)
CHECK FOR FAULTY A/C POT OR ASSOC. WIRING REPAIR/REPLACE POT/CONTROL WIRING RED WIRE @ A/C POT SHOULD HAVE APPROX. 5V
WITH IGNITION ON. WHITE WIRE WILL HAVE CONTINUITY TO CHASSIS GROUND, WHITE/BLUE WIRE SHOULD VARY BETWEEN 0V AND 5V WHEN LEVER IS MOVED UP AND DOWN.
CHECK FOR FAULTY A/C RELAY REPLACE RELAY FOR '55-56 CHEV. CHECK FOR PROPER PANEL CONVERSION. CONTROL LEVERS SHOULD TRAVEL TO WITHIN 1/8" OF BOTH ENDS OF THE SLOTS.
REFER TO INTSRUCTIONS "'55-56 CONTROL PANEL CONVERSION REV B 6 17 05" PDF OR 903055-PCA REV C 8/10/05 OR LATER INSRUCTION MANUAL.
EARLY INSTRUCTIONS ON '55-56 CHEV. DID NOT INCLUDE PANEL MOD PROCEEDURE FOR CONTROL WITH LOWER POT BRACKET OFFSET BACK FROM CASTING. IF LEVERS ONLY TRAVEL 2/3 TO 3/4 UP, THIS PROCEEDURE MUST BE PERFORMED
REPLACE ECU.
20
1969-70 MUSTANG w/o AC GEN IV
901271 REV A 2/11/08, 69-70 MUSTANG w/o AC GEN IV EVAP INSTR PG 20 OF 26