Hi Cheap,
You need to remove one wire at the sender (either one is fine) and then use your handheld gauge to check the resistance...key off. Your tank is full or very near it, so I would imagine your resistance ought to be in the high 20s or approaching 30 ohms.
To test your gauge in the dash, the easiest way is by disconnecting the signal wire from the sender at the tank (the red one in your case), connecting a 33 ohm common resistor to the signal wire's connector (you can just hold it with your finger and thumb) and touching the other end of the resistor's lead to a known good ground spot...ignition on. That should cause your fuel gauge to jump to full because the + contact of your gauge will see a ground connection, but it will be restricted to 33 ohms. If you need a 33 ohm resistor, please send me a PM with your name & address or send an email to
[email protected]I think I have a few around here and will be happy to send one. I probably also have a 15 ohm resistor, and by doing the same test with it, your gauge should register around half full. That should be a good test for the gauge.
