tach signal wire
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tach signal wire
I was wiring in an aftermarket tach that I had lying around, it worked a couple of years ago. I'm having trouble, when I put power to the signal wire the tach doesn't move. Is this normal, I don't think so, it should go to the max rpm correct. It's an autometer tach with 4 wires. One is red, white, black, and green. I have a good ground and it's wired up the same way it was in my last thirdgen. The green is the signal. I'm lost, even when I put power to the white wire for the stock tach, it moves a few hundred rpm and that's it. This made me think i'm doing something wrong.
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Wiring isn't my strong point, i'm also having trouble with the speedometer wiring.
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Wiring isn't my strong point, i'm also having trouble with the speedometer wiring.
Last edited by tompumped; Apr 10, 2006 at 03:40 PM. Reason: Automerged Doublepost
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From: NY
Car: 88 firebird
Engine: 355
Transmission: t-5
Axle/Gears: 9 bolt 3.91
I still can't figure it out, i'm not worried about the stock gauge. I just want to find out if the autometer gauge should be pinned when voltage is supplied to the signal wire. I'm using a power probe, that works fine.
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i think........the white is the sig wire and the green is what you hook up to the switch so it lights up when your lights are on
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From: Rockford, MI
Car: 1983 Pontiac Trans AM
Engine: 355 chevy
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Axle/Gears: Built 10 bolt 3.73 gears
The tach signal is usually green. the red and black are power and ground and the white is for the light.
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It's been years since I have messed with one but I think the white wire is the signal wire and the red wire is 12+ ignition...
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From: NY
Car: 88 firebird
Engine: 355
Transmission: t-5
Axle/Gears: 9 bolt 3.91
I hooked it up the way it was used in my camaro, and I looked on the autometer website. The green is definitely the signal, and the white is for the gauge light. I just don't know if the tach should be pinned when I apply voltage, I think it should. I don't have a motor in the car yet, but this drove me crazy today. I don't know if the tach is any good. Does anyone know?
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From: Rockford, MI
Car: 1983 Pontiac Trans AM
Engine: 355 chevy
Transmission: 700R4 Built
Axle/Gears: Built 10 bolt 3.73 gears
why dont' you call autometer and maybe they can help? lol just a suggestion since they do make them.
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Thread Starter
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iTrader: (3)
Joined: Mar 2005
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From: NY
Car: 88 firebird
Engine: 355
Transmission: t-5
Axle/Gears: 9 bolt 3.91
thanks for the response, and clearing it up for me. It was a simple question, I could've called the company, but I thought i'd check on here. The weird thing was if I ran the power probe over the signal wire without applying voltage or ground it jumped, this got me thinking it didn't work off of straight voltage.
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if ur going to be sarcastic why post?
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What's PWM?
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if ur going to be sarcastic why post?
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What's PWM?
Last edited by tompumped; Apr 10, 2006 at 08:56 PM. Reason: Automerged Doublepost
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