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Reverse Signal Wire Hook Up

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Pat and Raman hooking up the reverse wire on a 1999 with a new TrafficPro. Henry was there to give advice as we had to hook up to the reverse wire for his auto dim mirror retrofit last year.

Pull the seat and this is what you see. A control unit and a bunch of wires. With this 1999 it just had an air bag fix so there was aftermarket tape on and over the harness.


Remove tape until you find the black wire with a blue stripe. It is not hooked up to anything and should have a black plastic cap on the end. You may also find it under the carpet.


This is the cheat way to pull a wire from the back of the radio head over to the reverse wire. But it works. Porsche says to run the wire accross the dash and down to the door sill, then under the carpet to the control unit.


The wires are spliced together. The green wire runs under the carpet to the radio connector. A pin is crimped on the other end of the green wire and then the pin is inserted into the proper slot of the connector after you unlock the connector. The pin is not included in the TrafficPro kit, but you can buy it from Porsche.


On your TrafficPro display you will see that the reverse signal works by the down/reverse arrows.


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  • 4 years later...

MY99 996. I pulled up my drivers seat and found two black/blue wires going into the abs module. I could not find a "free" black/blue wire with a cap on it. Am I missing something? The pics in this post are gone... TIA!

Edit: ok, my eyes were tired last night, one of the wires was blue/black. I located and connected to the black/blue and the rear camera doesn't engage when I go in reverse. Wait, neither does the side mirror tilt or rear lights... fuse is fine...

****! Reverse gear switch here I come!


Edited by logray
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