Gas Gauge
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New User
Joined: Nov 2008
Posts: 5
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Gas Gauge
Some idiots tried to steal my truck and cut all the wires out of my 79 supercab.
I can't get the gas gauge to work! If I run new wires from my tank,One is ground and the other goes to the gauge..But what side? And do I have to put power to the Gauge? Pleeeze Help!! I need to know how to re wire my gauge.
thanks]
moses
I can't get the gas gauge to work! If I run new wires from my tank,One is ground and the other goes to the gauge..But what side? And do I have to put power to the Gauge? Pleeeze Help!! I need to know how to re wire my gauge.
thanks]
moses
Tuned
Joined: Apr 2006
Posts: 335
Likes: 2
From: N of Houston, TX
Some idiots tried to steal my truck and cut all the wires out of my 79 supercab.
I can't get the gas gauge to work! If I run new wires from my tank,One is ground and the other goes to the gauge..But what side? And do I have to put power to the Gauge? Pleeeze Help!! I need to know how to re wire my gauge.
thanks]
moses
I can't get the gas gauge to work! If I run new wires from my tank,One is ground and the other goes to the gauge..But what side? And do I have to put power to the Gauge? Pleeeze Help!! I need to know how to re wire my gauge.
thanks]
moses
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
The sending unit is basically a variable resistor\potentiometer\rheostat. Many names for the same thing. There are two wires coming from it - a black wire which grounds to the frame, and a yellow wire which goes up to the instrument cluster. It runs the length of the frame and goes in through the firewall, along with the tail lights, rear turn signals and reverse lights.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
I thought one post of the gauge was for power and the other post was the sending unit wire. If no one else here can verify this, I'd try posting in the electrical forum because some guys over there have access to a lot of wiring diagrams. I can't remember if the gauge sources power from regular battery voltage, or the regulated instrument cluster voltage which is much lower.
