Purkeys DIRECT PLUS Setup guide

A MISSION CRITICAL ELECTRONICS BRAN
D
DIRECT™PLUS
DIAGNOSTIC GUIDE
300-48 R1.01

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CONTENTS
Cover Assembly..................................................................................................2
Interior Light Module (optional) .....................................................................2
Connections Inside Nosebox............................................................................3
Connections Outside Nosebox.........................................................................3
Wire Diagram .....................................................................................................4
Basic Troubleshooting .......................................................................................4
No Lights on Face of the Nosebox..........................................................4
Batteries Not Being Charged ...................................................................6
Interior Lights Not Working (if installed)...........................................11
Limited Commercial Warranty Policy...........................................................13

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COVER ASSEMBLY
INTERIOR LIGHT MODULE (OPTIONAL)

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DIRECT PLUS DIAGNOSTIC GUIDE
CONNECTIONS INSIDE NOSEBOX
CONNECTIONS OUTSIDE NOSEBOX

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Step 1: Make sure that connections
are tight and inspect wiring for
defects.
BASIC TROUBLESHOOTING
Step 2: Check the 2 amp fuse in
the battery box at the DC/DC
converter.
• If blown , replace
• If good, proceed
WIRE DIAGRAM
NO LIGHTS ON FACE OF THE NOSEBOX

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DIRECT PLUS DIAGNOSTIC GUIDE
Step 3: Using a voltmeter, measure
the voltage at the 2-pin terminal
strip on the DC/DC converter
charging plate:
• Place the positive lead on the
ligate batt+ stud.
• Place the negative lead on the
ground stud.
• If there is a battery voltage
reading, skip to step 5.
• If no voltage is shown, proceed
to step 4.
Step 4: Check the 30 amp circuit
breaker using a voltmeter:
• Place the positive lead on
the circuit breaker stud that
connects to the red junction
stud closest to the DC/DC
converter on the plate.
• Place the negative lead on the
negative post of the battery.
• If there is a battery voltage
reading, proceed to the next
step.
• If no voltage is shown, reset the
circuit breaker.
• If there is still no voltage, check
wiring for defects.
• If no defects are found, replace
the circuit breaker

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BATTERIES NOT BEING CHARGED
Step 1: Connect the tractor 7-way
cable to the trailer and start the
tractor.
• Place the voltmeter positive
lead on the stud labeled
positive input.
• Place the negative lead on the
negative battery post.
• If there is a voltage reading,
proceed to the next step.
• If there is no voltage reading,
skip to step 8.
Step 5: On the front of the trailer,
remove the hardware holding the
cover assembly to the nosebox
base.
• Place the voltmeter positive
lead where the orange wire is
connected.
• Place the negative lead where
the white wire is connected.
• Check the battery voltage
reading.
• If there is a battery voltage
reading, replace the cover
assembly on the base.
• If there is no voltage reading,
inspect the wiring for defects
and repair any issues.

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DIRECT PLUS DIAGNOSTIC GUIDE
Step 2: Next:
• Place the voltmeter positive
lead on the yellow wire stud
labeled ignition.
• Place the negative lead on the
negative battery post.
• Battery voltage should read
approximately 10-13 volts.
Step 3: Unplug the 4-pin connector
from the DC/DC converter.
• Place the voltmeter positive
lead in pin #1 (12v + input).
• Place the negative lead in pin
#3 (ground).
Readings should be approximately
the tractor voltage:
• If yes, go to the next step.
• If no, inspect the wiring and
plug.
Step 4: Next:
• Place the voltmeter negative
lead in pin #3 (ground).
• Place the positive lead in pin #4
(ignition).
Reading should be approximately
10-13 volts.
• If yes, go to the next step.
• If no, inspect the wiring and
plug.

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Step 5: Next:
• Place the voltmeter negative
lead on the negative battery
post.
• Place the positive lead on the
red junction stud closest to the
converter.
Reading should be 13+ volts.
• If yes, proceed to the next step.
• If no, replace the wiring from
the converter to the converter
plug.
Step 6: Next:
• Place the voltmeter negative
lead on the negative battery
post.
• Place the positive lead on the
circuit breaker post away from
the battery.
Reading should be 13+ volts.
• If yes, proceed to the next step.
• If no, inspect the wiring
between the junction stud and
the circuit breaker and repair
any issues.

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DIRECT PLUS DIAGNOSTIC GUIDE
Step 7: Next:
• Place the voltmeter negative
lead on the negative battery
post.
• Place the positive lead on the
circuit breaker closest to the
battery post.
Readings should be 13+ volts.
• If yes, the system is working as
designed. Verify that the boost
converter LED is green.
• If no, reset the circuit breaker.
• If the circuit breaker will not
reset, replace it.
Step 8: On the front of the trailer,
remove the hardware holding the
cover assembly to the nosebox
base.
• Place the voltmeter positive
lead where the black wire is
connected.
• Place the negative lead where
the white wire is connected.
• If there is a voltage reading,
inspect the wiring between
the battery box and the cover
assembly.
• If there is no voltage reading,
check the 30 amp fuse and
replace if blown.

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Step 9: Next:
• Place the voltmeter positive
lead where the blue wire is
connected.
• Place the negative lead where
the white wire is connected.
Should read tractor voltage.
• If there is a voltage reading,
inspect the wire for defects and
replace if necessary.
• If there is no voltage reading,
check the ground fuse and
replace if blown. If it’s not
blown, replace the cover
assembly.
Step 10: Next:
• Place the voltmeter positive
lead where the yellow wire is
connected.
• Place the negative lead where
the white wire is connected.
Reading should be 10-13 volts.
• If there is a voltage reading,
inspect the wiring for defects
and replace if necessary.
• If there is no voltage reading,
replace the cover assembly.

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DIRECT PLUS DIAGNOSTIC GUIDE
INTERIOR LIGHTS NOT WORKING (IF INSTALLED)
Step 1: Check for voltage at the
interior light module:
• Place the voltmeter positive
lead on the blue wire.
• Place the negative lead on the
ligate negative battery post.
• ere should be a power source
voltage reading aer closing the
interior light switch.
• If there is a voltage reading,
inspect the wiring between the
module and the interior lights.
Replace if necessary.
• If there is no voltage reading,
check the 30 amp fuse. Replace
if blown, if not blown, proceed
to the next step.
Step 2: Next:
• Place the voltmeter positive
lead on the 30 amp fuse on the
module.
• Place the negative lead on the
ligate negative battery post.
Should read power source voltage.
• If yes, proceed to the next step.
• If no, inspect the jumper
between the cover assembly
and the module. Replace if
necessary.

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Step 3: Next:
• Place the voltmeter positive
lead on the 30 amp fuse on the
module.
• Place the negative lead on the
gray wire stud on the cover
assembly.
• e voltage should read 0 or a
very low voltage.
• Press the interior light switch.
• e voltage should read 10-14
volts.
• If voltage still reads 0 volts,
check for a blown fuse.
• If the fuse checks good, the
module is deemed defective.
Proceed to the next step to
conrm.
Step 4: To conrm the issue is the
module and not the switch on
cover assembly:
• Using a jumper, jump between
the light control stud on the
cover assembly and the ligate
battery negative.
• If the interior light module is
good, the interior lights should
come on while the jumper is in
place.
• Remove the jumper and the
interior lights will shut o.
• If the interior lights do not
come on, replace the module.

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DIRECT PLUS DIAGNOSTIC GUIDE
LIMITED COMMERCIAL WARRANTY POLICY
MCE Purkeys FE, LLC (hereaer “Purkeys”), warrants each product to be free of defects in
material or workmanship under normal use and service. is warranty is for the benet of
Original Equipment Manufacturers, Dealers, Warehouse Distributors, Fleets, or other End
Users (hereaer “Customers”) and covers products manufactured by Purkeys and sold new to
Customers either directly by Purkeys or by its authorized dealers, distributors, or agents. e
length of the Warranty Period is 36 months.
e warranty period commences on the in-service or install date and is not transferable.
Failure to provide the in-service or install date on the warranty claim form will cause the
warranty period to begin on the date the part was manufactured, or date of sale recorded on
the original sales invoice, whichever is earlier.
A completed warranty claim form should accompany all parts submitted to Purkeys for
consideration for repair or replacement under warranty. e submitted claim form should
contain all of the information required. Lack of a properly or fully completed claim form will
result in delay or denial of warranty claim. Claims must be submitted no later than 30 days
aer part is removed.
is warranty does not apply if, in sole judgement of Purkeys, the product has been damaged
or subjected to accident, faulty repair, improper adjustment, improper installation or wiring,
neglect, misuse, or alteration or if the product failure is caused by defects in peripheral vehicle
components or components attached to the Product or failure of a part not manufactured by
Purkeys.
is warranty shall not apply if any Purkeys product is used for a purpose for which it is not
designed or is in any way altered without the specic prior written consent of Purkeys. ANY
product alleged by a Customer to be defective must be inspected by Purkeys as a part of the
warranty claims process in order to conrm that the part has failed as a result of a defect in
material or workmanship.
Transportation for products and parts submitted to Purkeys for warranty consideration must
be prepaid by Customer. Repaired or replaced products and or components will be returned to
Customer pre-paid by Customer or “freight collect” to the address provided by Customer in the
warranty claim form. No charge will be made for labor or material in eecting such repairs.
e Warranty provided by Purkeys hereunder is specically limited to repair or replacement
of the Product as Purkeys deems most appropriate in its sole discretion. Purkeys neither
assumes nor authorizes any other person to assume on its behalf any other warranty or
liabilities in connection with Purkeys products. e Warranty does not apply to fuses or other
“consumable” or maintenance items which are or may be a part of any Purkeys product.
THIS WARRANTY DOES NOT APPLY TO LOSS OF VEHICLE OR EQUIPMENT, LOSS OF
TIME, INCONVENIENCE, OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES.
PURKEYS SPECIFICALLY DISCLAIMS AND SHALL NOT BE LIABLE FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES arising out of or from the use of Purkeys products by the
Customer.
THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, INCLUDING
COMMON LAW WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABILITY, AND ANY OTHER EXPRESS OR IMPLIED WARRANTIES. ALL
OTHER SUCH WARRANTIES ARE SPECIFICALLY DISCLAIMED.
is Limited Commercial Warranty supersedes all previous Warranty Policies issued by
Purkeys and any of its suppliers.