automatic shifter wiring?
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Joined: Jun 2009
Posts: 1,777
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
automatic shifter wiring?
Hey guys, I'm taking on an auto-to-5-speed swap in my 91 Trans Am and I had a question about the wiring in the automatic shifter. Now in the following picture, I know that the top two wires (thick green and purple) are for the neutral/clutch safety switch for the igntion, and the two in the middle (light green and blue) are for the reverse lights (correct me if I'm wrong with any of this).
Now what are the bottom two wires (black and orange) for? After taking apart the little circuit board that connector plugs into, those two wires appear to be jumped when the shifter is in either neutral or park. I just can't think of what that may be? Perhaps a reference signal to the ECM to adjust the idle when the car is in park/neutral as opposed to being in gear? Any help would be great, thanks!!
Now what are the bottom two wires (black and orange) for? After taking apart the little circuit board that connector plugs into, those two wires appear to be jumped when the shifter is in either neutral or park. I just can't think of what that may be? Perhaps a reference signal to the ECM to adjust the idle when the car is in park/neutral as opposed to being in gear? Any help would be great, thanks!!
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: automatic shifter wiring?
(Make the org wire safe)
Joined: Aug 1999
Posts: 5,261
Likes: 461
From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: automatic shifter wiring?
No need for TCC lock-up on a stick car,... Your Good-to-Go !!
Last edited by John in RI; Jan 9, 2014 at 10:58 AM. Reason: spelling !
Thread Starter
Supreme Member
iTrader: (1)
Joined: Jun 2009
Posts: 1,777
Likes: 0
From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
Re: automatic shifter wiring?
Vetteoz, thanks for the diagram! You're the man. And John, yep I know! I plan on getting a t5 tune which will eliminate the TC lockup from the ECM anyway.
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