Tigger

Greetings all:

New member here. Former Lexus owner and now a proud MB owner

Just curious if anyone knows what these wires are. (Pls. refer to the attached photo) Any help is greatly appreciated. Thanks in advance.

konigstiger

Trunk lid CU

Tigger

Awesome! Thanks for the quick reply konigstiger. You don't happen to know where the wiring for the 3rd brake light are located do you?

konigstiger

Rear shelf

Tigger

I have a 2014...not quite that easy.

Arrie

I took the rear shelf apart and if I remember correctly the third brake light wiring runs up under the back seat right side bolster. Two wires together but my car is a 2010 model so it might be different on yours.


What are you planning to connect to it? If the light is out your warranty should cover it.

Tigger

I just need to tap on to the wires to install a device to make it flash 3 times when you hit the brakes. Too many inattentive drivers in SoCal busy with texting & on the phones.

Tigger

If possible I'd like to avoid taking the assembly apart. I just need where the wires run so I can install it from there.

Arrie

In my car the bolster comes off by just pulling it up. The two wires are a flat cable and the harness may also be there. Not sure about this now...can't remember...