H. Modifying the Wiring Harness For the Tele Aid Control Module

1. Disconnect the Tele Aid power supply connector from the Tele Aid control module (Figure 34).





2. Remove the housing from the Tele Aid power supply connector (Figure 35).

3. If pin # 14 is vacant (Arrow, Figure 35), proceed to step 6.





4. If occupied (Arrows, Figure 36), verify that the violet-color wire coming from pin # 14 goes to:

^ Pin # 3 of the power supply connector for the linear compensator

^ Pin # 28 of the power supply connector for the MHI control module

5. If so, proceed to step 19.

Note:
If the wire coming from pin # 14 does not go to pin # 3 and pin # 28 of the power supply connectors for the linear compensator and MHI control module respectively, contact TAC/EDAC for diagnostic assistance.

6. Crimp the kit-included pin onto an end of the 6-foot section of 20-gauge, violet-color wire. Note: Refer to Parts Information, Section M, page 24 for pin distinction information.

7. Insert the crimped-on pin of the 20-gauge, violet-color wire into pin # 14 of the power supply connector for the Tele Aid control module (Arrows, Figure 36).

8. Reinstall the housing on the power supply connector for the Tele Aid control module.





9. Route the 20-gauge, violet-color wire from pin # 14 of the power supply connector for the Tele Aid control module along the main wiring harness leading to the linear compensator (Figure 37).

Note:
Secure the 20-gauge, violet-color wire to the main wiring harness with wire ties and electrical tape.





10. Disconnect the power supply connector from the linear compensator (A, Figure 38).

11. Remove the tape from the power supply wiring harness for the linear compensator from the connector to the point where it branches off the main wiring harness (Figure 38).

12. Separate the violet-color wire of the power supply wiring harness for the linear compensator from the other wires (Figure 38).

13. Cut the violet-color wire of the power supply wiring harness for the linear compensator halfway between the connector and the point where it branches off the main wiring harness (B, Figure 38).

14. Strip 1/4 inch insulation off both ends of the violet-color wire cut in step 13.

15. Strip 1/4 inch insulation off the 20-gauge, violet-color wire routed to the linear compensator.





16. Solder splice the two cut ends of the violet-color wire of the power supply wiring harness for the linear compensator to the end of the 20-gauge, violet-color wire routed from Tele Aid control module (Figure 39).

^ Twist the solder splice into the three wire ends

^ Use a heat gun on high setting to melt the solder over the twisted together wire ends and the glue over the wire insulation

17. Reapply tape to the power supply wiring harness for the linear compensator including the solder spice.

18. Reconnect the power supply connector to the linear compensator.

19. Test the modification.

a) With the Tele Aid control module unplugged and the telephone in the cradle, set COMAND or Audio 20 head unit to "TEL" mode. Notice the signal strength bars on the display.

b) Turn off COMAND or Audio 20 head unit.

c) Connect the power supply connector to the Tele Aid control module.

d) Turn on COMAND or Audio 20 head unit and select "TEL" mode. Notice the level increase in the signal strength bars on the display.

Note:
There may be no increase in the signal strength bars on the display if too close to a cell tower.