Need help with spoiler harness wiring diagram for third brake light

[jchapura]

I need a wiring diagram and physical locations for connectors for the wire harness associated with the rear spoiler lift mechanism.

 

I want to "fake out" the electronics such that the computer (really the rear spoiler's third brake light) to think that the spoiler is always in the raised position. It's my understanding that there is a upper limit switch on the lift mechanism and a lower limit switch. If the upper spoiler position is "tripped" then the spoiler's third brake light is energized. If the spoiler is parked (or in the lower position) then the fixed back windshield third brake is energized.

 

Presumably, by opening or shorting some wires, I can mimic the natural positions of the spoiler, and get the effect I want. I could also accept having both third brake lights energized - if someone has a technique for that.

 

Why? Because I've replaced the original spoiler with a fixed wing, and transferred the spoiler's third brake light to the wing.

 

Would someone be able to post a wiring diagram of the harness wires I'd need to test and modify? I'd like to do the wire modifications near a connector, probably near the non-spoiler end of the harness - would you be able to suggest where the spoilers lifting mechanism harness terminates in the body or engine compartment? A picture would be great.

Edited February 17, 2016 by jchapura

[Loren]

Why not use the 997-1 aerokit wire harness? It's made for a fixed rear wing.

 

997.612.670.71 aerokit rear wing wiring harness

[jchapura]

Why not use the 997-1 aerokit wire harness? It's made for a fixed rear wing.

997.612.670.71 aerokit rear wing wiring harness

The cost and the likelihood I'll still need to have the car recoded by piwis. I've already spent too much on this wing. The wing's design allows the lifts to go up and down to no effect so I'm not worried about deleting that function. I just want to enable using the third brake light.

Another option I have is just to press the spoiler up button on the console. But that's a bit of a pain to remember.

I was hoping to learn I could just cut one wire and short-out two others.

[Loren]

Problem is that on a 997-1 the rear lights are controlled by control unit.

It might take just a recode.

[jl-c]

try this

tailgate.doc

[jchapura]

try this

Thank you very much. This should do the trick to design the mod.

[jchapura]

I did the mod. I decided to light-up both lights. Here's the mark-up for the mod.

 

The wing brake light harness is readily exposed in the engine bay (a cut and tie-in are there). The main engine lid harness is on the passenger side near the lid hinge and was easily exposed more for its cuts and tie-ins. So, I did not have to demount the wing to access anything in the area into which the old spoiler retracted.

 

I haven't figured out how to embed an image here so here's link to another forum with marked-up wiring diagram: http://rennlist.com/forums/997-forum/918989-need-help-with-spoiler-harness-wiring-diagram-for-third-brake-light.html#post13031713

 

Edited February 19, 2016 by Loren
added image - just use Attach Files and then place where you like