FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Towbar, Wiring, 13-Pin













Towbar, wiring, 13-pin























INTRODUCTION
- NOTE! Read through the whole installation instruction before starting the work.
- The illustrations display the procedure in order of operation. The order of operation is repeated in the text






Towbar, wiring, 13-pin





- Turn the ignition switch to position 0.

Note! Wait at least three minutes before unplugging the connectors or removing other electrical equipment.














A




B

Applies to vehicles with a fixed towbar




- Take three screws and nuts from the kit and install the connector in the bracket.





- Remove the rubber grommet from the floor and place it to one side. It will not be reused.





- Insert the cable with the connector into the hole in the spare wheel well.

Note! Install the rubber grommet so that the cable points to the left on the inside.





- Clamp the cable harness at the radiated heat shield's left bracket using a cable tie from the kit. Install the clip in such a way that the cable harness comes out from the sharp edge of the bracket. Do not tighten the cable tie yet.





- Transfer the connector's cradle to the start of the hook's radius.
- Align the connector's cradle so that it is straight. Tighten it slightly but not too tight yet.





- Clamp the cable at the hook as illustrated. Do not tighten the cable tie yet.





- Adjust the cable length between the rubber grommet, clamps and connector.
- Tighten the clamp on the radiated heat shield's bracket but do not tighten the clamp on the hook.
- Press the rubber grommet into the floor.
- Fold the cradle down with the connector slightly so that it is not in the way when the bumper is attached.

Applies to vehicles with a detachable towbar




- Remove the rubber grommet from the floor and place it to one side. It will not be reused.





- Take three screws, nuts and cable harness from the kit and insert the cable harness together with the rubber grommet into the hole in the body.





- Install the connector on the bracket and tighten.

Note! Install the rubber grommet so that the cable points to the left on the inside.

- Adjust the cable length from the connector and to the rubber grommet.
- Press the rubber grommet into place.





- Clamp the cable harness at the radiated heat shield's left bracket using a cable tie from the kit. Install the clip in such a way that the cable harness comes out from the sharp edge of the bracket.
- If necessary, adjust the length of the cable harness between the clips and rubber grommet.





- Fold up and secure the insulation mats.





- Route the cable together with the ground lead from the rubber grommet. Route it in front of the legs to the control module for the electric parking brake bracket up to the TRM unit.
- Connect the connector to the TRM unit.

Note! If the car has an MMM unit, route and clamp the bracket to it in the same way.





- Clamp both the cables at both legs for the bracket to the control module for the electric parking brake. Use cable ties with and without clips.





- Connect the ground lead's black male connector (1) to the corresponding black female connector (2) on the cable that comes from the cable duct.





- Clamp the cable excess at the cable duct using cable ties from the kit.

Applies to all models









- Insert a piece of wire from the fuse holder's compartment out through the rear edge of the floor compartment support.
- Tape the remaining cable end and route it forwards in the compartment to the fuse holder.
- Make sure that the cable does not chafe against sharp edges.

Points 23-30 apply to vehicles manufactured before w0946




- Press the catches on the cover together for the module RJB-A and remove it.





- Push up the catches on both sides of the fuse holder's upper modules using a small screwdriver and carefully pull off the entire fuse holder and fold it in towards the middle of the car.





The cable must be connected to the spare socket on the reverse of the fuse socket F9 on module RJB A.
- Squeeze the pliers together on the fuse holder catch on the module where the cable is to be pressed in, and pull up.





- Carefully pry the joint between the module's inner and outer parts using a weatherstrip tool so that the inner part slides to the side slightly so that the cable terminal can be positioned.


Illustrations A and B




- Install the routed cable in fuse terminal F9.
- Reinstall the catch in the outer part.













- Install a 15 A fuse from the kit in terminal F9.







Points 31-38 apply to vehicles manufactured before w0946. These vehicles only have one fuse holder/relay holder.




- Press together the catches on the module cover RJB-A and remove it.





- Push up the catches on both sides of the fuse holder's upper module using a small screwdriver and carefully pull it off and fold it in towards the middle of the car.





The cable must be connected to the spare socket on the reverse of the fuse socket F4 on module RJB A.
- Squeeze the pliers together on the fuse holder catch on the module where the cable is to be pressed in, and pull up.





- Carefully pry the joint between the module's inner and outer parts using a weatherstrip tool so that the inner part slides to the side slightly so that the cable terminal can be positioned.


Illustrations A and B




- Install the routed cable in fuse terminal F4.
- Reinstall the catch in the outer part.


























Checking the 13-pin connector

Note! The trailer module (TRM) must be programmed with software in order to function correctly.





Position - Function
1. Left indicator lamps
2. Rear fog lamps
3. Ground
4. Right indicator lamps
5. Rear right-hand running light
6. Brake lamp
7. Rear left-hand running light
8. Reversing lamp
9. Power supply +12V
10. Charging +12V, only with the ignition switched on
11. Ground
12. Not used
13. Ground


Illustrations A and B