P07-158

Procedure 07-158
Tail Lights Brake Lamp Electrical Rework
Description:
This procedure is for changing the functionality of the tail lights in the J4500 coaches, such
that it abides by the New Jersey Administrative Code Section 16:53-3.30, which requires the
stop lights to be “separate and independent” of all other rear lights on the coach.
This rework can be used for J4500 coaches MY2013.and onward
Read this entire procedure before beginning work.
Use Safe Shop Practices at All Times.
To avoid personal injury:
a. Proper Personal Protective Equipment (PPE) must be worn. Safety glasses and
protective gloves are required for working with DEF Fluid.
b. Turn the main battery disconnect switch to the OFF position.
c. Ensure that both the front and the rear wheels are chocked.
d. Positioning the ENGINE RUN and ENGINE START switches on the engine
compartment remote control box to the OFF position.
e. Allow enough time for components to cool down prior to working in the engine
compartment.
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Procedure 07-158
1.0
Material requirements:
ITEM
1
2
2.0
PART NO
T12-1216
19-11-258
QTY U/M
2
EA
4
EA
DESCRIPTION
HARNESS – TAIL LT REWORK JMPR
Tyrap – 7.31” LG
Special Tools:
No special tools are required.
3.0
Fit the new harnesses on both tail lights:
Locate the tail lamp assemblies at the rear of the coach. Visually check to ensure the
lamps are red at the top and middle locations indicated as shown in the figure below.
Red, turn
signal/hazards
Red, stop
lamp/running lamp
Back-up lamp
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Procedure 07-158
Open the engine door.
Open
For the Left-Hand Tail Lights:
Disconnect the red tail-light connectors from the left-hand lamp assembly.
Disconnect
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Procedure 07-158
Connect the existing top harness male connector (EC-P543) to the female connector (ECP453A) on the jumper harness (MCI P/N: T12-1216).
Connect the male end of the jumper harness (EC-P453B) to the top tail light.
EC-P543
Run the jumper harness down and connect the existing middle harness male connector
(EC-P542) to the female connector (EC-P452A) on the jumper harness.
Connect the male end of the jumper (EC-P452B) to the middle tail light.
EC-P542
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Procedure 07-158
Using two zip ties (MCI P/N: 19-11-258), secure the harnesses for cable management as
needed.
For the Right-Hand Tail Lights:
Disconnect the red tail-light connectors from the right-hand lamp assembly.
Disconnect
Connect the existing top harness male connector (EC-P540) to the female connector (ECP543A) on the second jumper harness (P/N: T12-1216).
Connect the male end of the jumper harness (EC-P543B) to the top tail light.
EC-P540
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Procedure 07-158
Run the jumper harness down and connect the existing middle harness male connector
(EC-P539) to the female connector (EC-P542A) on the same jumper harness.
Connect the male end of the jumper (EC-P542B) to the middle tail light.
EC-P539
Using two zip ties (MCI P/N: 19-11-258), secure the harnesses for cable management as
needed and close the engine door.
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Procedure 07-158
4.0
Appendix:
Harness drawing:
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Procedure 07-158
Schematic drawing:
End of the procedure
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