15
Installation
5. Plug the power connector into the power supply port of the ECU/Modulator valve assembly.
6. Push the yellow locking tab IN to secure the connection. Note: If it will not push in, make sure the
power cable is fully seated. Once the locking clip is secured, install a cable tie to secure the cable to
the cable mounting bracket.
7. Fasten the power cable with a cable tie.
8. If you are installing the power cable only, go to Step 10.
9. If you are installing the diagnostic cable:
A. Install the diagnostic cable bracket so that the diagnostic plug is accessible. The normal
location is on the right front corner of the sub-frame, but will vary depending on the type of
trailer.
B. Pull the yellow locking tab OUT to allow the diagnostic cable to be plugged in.
C. Plug the diagnostic cable into the Subsystem Port of the ECU/modulator valve assembly.
D. Push the yellow locking tab IN to secure the connection. Note: If it will not push in make sure
the cable is fully seated.
E. Fasten the cable with a cable tie.
F. Route the diagnostic cable from the Subsystem Port on the ECU/dual modulator valve
assembly to the diagnostic cable bracket.
G. Correctly secure the cable in the sub-frame to prevent cable damage. Leave enough slack in
the cable to compensate for
fl
exing of the trailer and sub-frame
H. Bundle excess cable in a loop (bow tie) and secure the cable in the sub-frame. Figure 10.
10. Install the ABS indicator lamp on the trailer. Refer to the the Federal Moter Vehicle Safety Standard
(FMVSS) 121 Regulation from NHTSA for the exact location of the indicator lamp. Use an approved
lamp with ABS etched on the lens (available from major trailer parts suppliers).
To ensure correct lamp operation, use an incandescent-type DOT-approved lamp or an LED with integral
load resistor.
If you are using the industry-standard connector cable and do not have access to the mating trailer
harness, mask the open connector to protect it from paint or grease.
11. Connect the power. Use the industry-standard connector cable or a blunt-cut power cable.
For industry-standard connector cables:
Attach the power cable to the harness on the trailer.
For an optional blunt-cut power cable:
Wire the cable and ABS indicator lamp to the seven-way
connector on the trailer according to the following diagram. Figure 11.
Fig. 11
ECU POWER CONNECTOR
GROUND
WHITE
BLUE
RED
GREEN AND WHITE
TRAILER ABS
INDICATOR LAMP
(CONSTANT POWER)
(STOP LAMP)
(GROUND)
Junction box not shown.
4013987a
4
1
8
6
5
7
2
3