Help to identify wires/relays under dash (pics)
09-11-2012 | 08:43 PM
#1
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Car: 87 Pontiac Trans Am
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Help to identify wires/relays under dash (pics)
So I am a real wiring noob and I know I need to get a chiltons book or something soon but I need to know what these things under the passenger side dash wire to, what they do.
The black box says AC on it, the thing to the right that it is wired into (The white green and grey wires have been cut),the relay to the right of that and the relay hanging below to the left. The computer wires are to the right and thats been taken out.
Thanks
The black box says AC on it, the thing to the right that it is wired into (The white green and grey wires have been cut),the relay to the right of that and the relay hanging below to the left. The computer wires are to the right and thats been taken out.
Thanks
09-11-2012 | 10:30 PM
#2
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: Help to identify wires/relays under dash (pics)
The yellow box is your VSS (Vehicle Speed Sensor) buffer box. It splits the signal for the ECM, cruise control and speedometer.
The black box I have seen before but for the life of me can't remember what it does. Its wire colors would refresh my memory.
The relay next to it is the power-antenna relay.
Hope this helps.
Lou
The black box I have seen before but for the life of me can't remember what it does. Its wire colors would refresh my memory.
The relay next to it is the power-antenna relay.
Hope this helps.
Lou
09-12-2012 | 06:04 AM
#3
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From: Bay City,Michigan
Car: 87 Pontiac Trans Am
Engine: Lapouttre Racing 350
Transmission: Rebuilt 700r4 Mild shift kit
Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Re: Help to identify wires/relays under dash (pics)
The yellow box is your VSS (Vehicle Speed Sensor) buffer box. It splits the signal for the ECM, cruise control and speedometer.
The black box I have seen before but for the life of me can't remember what it does. Its wire colors would refresh my memory.
The relay next to it is the power-antenna relay.
Hope this helps.
Lou
The black box I have seen before but for the life of me can't remember what it does. Its wire colors would refresh my memory.
The relay next to it is the power-antenna relay.
Hope this helps.
Lou
09-12-2012 | 06:31 AM
#4
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From: Sydney, Australia
Car: '86 TA
Engine: '74 350
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Re: Help to identify wires/relays under dash (pics)
The black box that says AC is cruise control afaik.
Edit: Yep need yellow box for speedo.
Edit: Yep need yellow box for speedo.
09-12-2012 | 09:29 AM
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Car: '91 Z28 convertible
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Axle/Gears: 3.27 posi disc
Re: Help to identify wires/relays under dash (pics)
AFAIK = As Far As I Know
Yes, you need to keep the yellow VSS buffer box. Without it, your speedometer or cruise control won't work.
Yes, you need to keep the yellow VSS buffer box. Without it, your speedometer or cruise control won't work.
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