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Old 01-23-2011, 11:31 PM
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bluebee bluebee is offline
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Originally Posted by Variocam View Post
Could you please identify which wires control the back-up lights?
Dunno how much this helps for the E46, but we identified the innervation point of all 13 wires in the E39 trunk wiring loom over here.
- E39 Electrical Problems Traced to Trunk Lid Harness Wire Chafing (DIY Diagnostic)

If you don't get an answer specific for the E46, the technique we used to identify the wires' innervation points should be useful to you also.

In addition, the problems that occur when the end points were enervated (by the broken or shorted wires) might also be of use to you.

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