multiple engine wires from passenger side
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Joined: Jul 2008
Posts: 440
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From: Oglesby,TX
Car: 91 RS T-top
Axle/Gears: 3:42 fourth gen disk brake
multiple engine wires from passenger side
I am unsure where all of these wires go. I am guessing the car was carbed or something. I found these wires all bunched up and taped off. Is there a way to unplug the entire set of wires or should i just figure out where they go and hack away from another car? thanks
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: multiple engine wires from passenger side
there is only one main harness on the passenger side, and its everything that's related to the engine computer. you could try to depin them, but the bulkhead is potted (epoxy filled), so its not an easy chore without possibly doing damage to other wiring
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Member

Joined: Jul 2008
Posts: 440
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From: Oglesby,TX
Car: 91 RS T-top
Axle/Gears: 3:42 fourth gen disk brake
Re: multiple engine wires from passenger side
Thanks. So i pulled the harness from both cars now what would be the difference in automatic and manual? would it be just the transmission wires?
first pic is manual wiring

second pic is automatic wiring
first pic is manual wiring

second pic is automatic wiring
Thread Starter
Member

Joined: Jul 2008
Posts: 440
Likes: 1
From: Oglesby,TX
Car: 91 RS T-top
Axle/Gears: 3:42 fourth gen disk brake
Re: multiple engine wires from passenger side
No wire guru on this? Guess ill figure it out and keep this updated for future reference.
Re: multiple engine wires from passenger side
Autos have the brake switch wire from the C100
Manuals have the back-up light connector from the C100 and no brake wire
Did your LO3 actually run with all those wires chopped?
Manuals have the back-up light connector from the C100 and no brake wire
Did your LO3 actually run with all those wires chopped?
Thread Starter
Member

Joined: Jul 2008
Posts: 440
Likes: 1
From: Oglesby,TX
Car: 91 RS T-top
Axle/Gears: 3:42 fourth gen disk brake
Re: multiple engine wires from passenger side
ok the wires running to the transmission. Which wire isnt used?
This is the automatic plug with three wires

This is the manual with two wires
This is the automatic plug with three wires

This is the manual with two wires
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Re: multiple engine wires from passenger side
the asuto should have 2 plugs the one in the 1st pic is to the torgue converter lock up switch ther should be another plug that would go the speed sensor. the plug for the manual it the speed sensor
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Joined: Sep 2000
Posts: 6,775
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
Re: multiple engine wires from passenger side
The 3 wire plug is for converter lock-up. The 2 wire is the reverse light switch plug (vss is a purple and yellow wire).
Reverse light switch is on the auto shifter along with the park-neutral switch.
Reverse light switch is on the auto shifter along with the park-neutral switch.
Thread Starter
Member

Joined: Jul 2008
Posts: 440
Likes: 1
From: Oglesby,TX
Car: 91 RS T-top
Axle/Gears: 3:42 fourth gen disk brake
Re: multiple engine wires from passenger side
OK there are two plugs for auto and two plugs for manual. The first pic is auto. A total of 5 wires three on one plug two on the other. The three wire plug has a wire I need to delete or ground off or something which wire (color) do I do this to and what needs to be done to it.
First pic is auto

This is manual
First pic is auto

This is manual
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