Brakes - Trailer Brake Controler Wiring Procedure
Date: August 1999
Order No.: T-SI-MBUSA-31.19/03
Supersedes:
Group: 31
SUBJECT:
MODEL 163
2000 Mercedes Benz Truck ML 55 AMG (163.174) V8-5.5L (113.981) 286
RECOMMENDED WIRING PROCEDURE DURING BRAKE CONTROLLER INSTALLATION
IMPORTANT!
This document is only to be used as a guide for locating the recommended point at which to connect an electric brake controller to an M-Class
vehicle's brake lamp circuit and trailer socket. There are various makes and models of brake controllers on the market and none have been tested
or approved for use by Mercedes-Benz. Further, all work of this type must be performed in strict accordance to the installation instructions and
set up procedures as supplied by the brake controller manufacturer.
Procedure
1. Locate the 3-wire to 2-wire converter (N28, Figure 1) that is built into the wiring harness supplied with the trailer hitch kit (part no. Q6 31
0002).
2. Cut the orange circuit # 1660 wire (A) at a point after N28, but before the point the harness exits the vehicle through the grommet.
3. The end of the orange wire # 1660 that comes from N26 should be connected to a new wire (B) and run to the brake controller. This wire
supplies the brake light signal to the controller and only needs to be of wire size 1 sq. mm or equivalent.
4. A second wire (C) should be run from the brake controller output to the end of the orange wire # 1660 that runs to the trailer socket (X58).
This is the designated electric brake terminal. Refer to the brake controller installation instructions for proper wire size.
5. Follow the brake controller installation instructions for connecting power and ground circuits. Most recommend using a circuit breaker and
connecting the power and ground circuits directly at the battery (G1).
6. Carefully read and follow the brake controller installation instructions for all mounting, testing, and adjustment procedures. Note: Controller
must be mounted within reach of driver.
IMPORTANT!
Follow the brake controller's instructions for installing overcurrent protection and for all wire routing and size requirements!
Note:
Brake controller must be set up, adjusted, and tested according to the instructions supplied with the controller.
2000 Mercedes Benz Truck ML 55 AMG (163.174) V8-5.5L (113.981) 287
Date: August 1999
Order No.: T-SI-MBUSA-31.19/03
Supersedes:
Group: 31
SUBJECT:
MODEL 163
2000 Mercedes Benz Truck ML 55 AMG (163.174) V8-5.5L (113.981) 286
RECOMMENDED WIRING PROCEDURE DURING BRAKE CONTROLLER INSTALLATION
IMPORTANT!
This document is only to be used as a guide for locating the recommended point at which to connect an electric brake controller to an M-Class
vehicle's brake lamp circuit and trailer socket. There are various makes and models of brake controllers on the market and none have been tested
or approved for use by Mercedes-Benz. Further, all work of this type must be performed in strict accordance to the installation instructions and
set up procedures as supplied by the brake controller manufacturer.
Procedure
1. Locate the 3-wire to 2-wire converter (N28, Figure 1) that is built into the wiring harness supplied with the trailer hitch kit (part no. Q6 31
0002).
2. Cut the orange circuit # 1660 wire (A) at a point after N28, but before the point the harness exits the vehicle through the grommet.
3. The end of the orange wire # 1660 that comes from N26 should be connected to a new wire (B) and run to the brake controller. This wire
supplies the brake light signal to the controller and only needs to be of wire size 1 sq. mm or equivalent.
4. A second wire (C) should be run from the brake controller output to the end of the orange wire # 1660 that runs to the trailer socket (X58).
This is the designated electric brake terminal. Refer to the brake controller installation instructions for proper wire size.
5. Follow the brake controller installation instructions for connecting power and ground circuits. Most recommend using a circuit breaker and
connecting the power and ground circuits directly at the battery (G1).
6. Carefully read and follow the brake controller installation instructions for all mounting, testing, and adjustment procedures. Note: Controller
must be mounted within reach of driver.
IMPORTANT!
Follow the brake controller's instructions for installing overcurrent protection and for all wire routing and size requirements!
Note:
Brake controller must be set up, adjusted, and tested according to the instructions supplied with the controller.
2000 Mercedes Benz Truck ML 55 AMG (163.174) V8-5.5L (113.981) 287
