Grey wire from engine bay?

[SSMonte87]

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[ssn696]

Not stock. Car alarm or stereo?

 

[SSMonte87]

Not stereo I was just wiring mine together and I found this shoved under the dash from previous owner and the wires were live thank you that's what I was wondering most likely an alarm because I did find one it was the blinker light on the door panel and the wires ran underneath the carpet towards fuse box


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[SSMonte87]

are these aftermarket?


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[SSMonte87]

Reason why I'm asking is because my gauges do not work they're all over the place jumping around when I drive and rpm is all the way past 5 when idling previous owner said after he put in a turbo 350 transmission is when gauges didn't work anymore I'm trying to figure it out I'd ask him but he passed on


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[fleming442]

You need to get up under there further, and disconnect the wires where they're tied in. You may find a few of those nasty, dirty, little, evil Scotchloks up there. They are evil because they can break conductors if installed incorrectly, maybe even cut a wire.
As far as the gauges go: make sure the ground is hooked up (2-10mm bolts above the e-brake pedal where the dash mounts) and verify proper operating voltage (13.8-14-4) at the battery, alternator, and starter where the main cables go.