Help with wiring
So I’m guessing the yellow is a constant 12v but idk what the brown is or why the hell the previous owner has it wired like this nor do I see a plug under the dash it plugs into. Also I can’t find where the smaller White plug is suppose to go.
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Other vehicles operate much like you thought. They have a system called Passlock (called VTD - Vehicle Theft Deterrent in GM manuals) which does not require a resistor pellet in the ignition key like VATS does. It works by using Hall effect sensors in the ignition cylinder to detect the rotation of the key and disable the fuel injectors if it sees a problem. The car will start but stall moments later due to lack of fuel. The idea is that the sensor will detect normal rotation only if the correct key is turned in the ignition. If the ignition is forced or the cylinder damaged by a slide hammer (a common way to steal a car) then the sensor won't see the proper rotation.
Last edited by WhiteBird00; May 13, 2020 at 10:37 AM. Reason: grammar
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In regards to the wires, they both seem to be meshed in with the factory wiring harness. As far as electronics go there were no aftermarket alarms or anything like that I could see being spliced in
The blue one is the cruise control depression switch for the brake pedal
If your car is a hard top with crank windows its possible that some one installed an aftermarket cruise control system
What year/type of car is this? (We are also seeing the brake pedal switch in your pictures vs. the clutch.)
For example, the clutch switch on a manual car should have a Dark Green and a Purple/White Stripe wire involved:

If you register on AutoZone.com, you can get access to the full set of GM wiring diagrams in their Repair section. ^
What year/type of car is this? (We are also seeing the brake pedal switch in your pictures vs. the clutch.)
For example, the clutch switch on a manual car should have a Dark Green and a Purple/White Stripe wire involved:

If you register on AutoZone.com, you can get access to the full set of GM wiring diagrams in their Repair section. ^
I took a photo of the brake switch because both plugs are taped and wire looked into that harness. I tried looking at where the wires ran too but I lose them in the main harness under the dash on near the fuse panel.
my car is a 1996 Firebird ws6 M6
also the wire colors are
blue plug: yellow and brown
white plug: black w/white and tan
These don't seem to match up. ... and this is wierd:











