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Help identifying three thick purple wires under dash (pic enclosed)

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Old Jul 26, 2022 | 04:22 PM
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From: London, UK
Car: 1991 Trans Am
Engine: L31, LT4 hot cam
Transmission: T5
Axle/Gears: 3:42 LSD
Help identifying three thick purple wires under dash (pic enclosed)


As above. Looks like some butchery going on here any ideas where these are supposed to go? 91 5 speed tpi trans am

Thanks!
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Old Jul 26, 2022 | 04:41 PM
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Help identifying three thick purple wires under dash (pic enclosed)

Only big and purples I know of is for crank. Powered with key in crank position? Maybe bypassed the clutch switch?
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Old Jul 26, 2022 | 08:17 PM
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Help identifying three thick purple wires under dash (pic enclosed)

Correct!


I am not able to access most of my GM Data Server (I am installing a new MoBo and CPU for the next Gen EPYC).
So off the top of my head; the only 12AWG or 10 AWG Purple Wire in that area...
Would be from the IPBEC (Crank fuse) to the NS-Switch on the Clutch Pedal-Arm.

Looks like maybe an Aftermarket Spliced Circuit for Neutral Safety/ Remote Start purposes...
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Old Jul 26, 2022 | 11:58 PM
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GTA1990's Avatar
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From: London, UK
Car: 1991 Trans Am
Engine: L31, LT4 hot cam
Transmission: T5
Axle/Gears: 3:42 LSD
Re: Help identifying three thick purple wires under dash (pic enclosed)

Thanks and interesting. So this is different to the clutch safety switch (which works)?
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Old Jul 27, 2022 | 06:05 PM
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vorteciroc's Avatar
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From: 212 is up in this Bit@#
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Help identifying three thick purple wires under dash (pic enclosed)

No it is the same...
Most Automotive Parts have more than 1 correct name.

Neutral Safety Switch is a Term that can be used for a Clutch Pedal Position Switch (Manual Trans.) or a Gear Selector Park-Neutral Position Switch (Auto. Trans).
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