Hey all-
I am in the final stretch of finishing a 70 SS and I am running into a few electrical challenges. When the key is in the on position, the fuel gauge moves up and down - but not all of the time. Also, I noticed that the battery is running down just from sitting a day or so. Any ideas?

Maybe a bad ground? I should note that whoever had the car before me, totally hacked up the wiring under the dash and in the engine compartment.

Hey all-
I am in the final stretch of finishing a 70 SS and I am running into a few electrical challenges. When the key is in the on position, the fuel gauge moves up and down - but not all of the time.
How much does it move?

Also, I noticed that the battery is running down just from sitting a day or so. Any ideas?


Do a drain test........

To test for the drain, disconnect any clocks and radio with memory, with the car off and everything turned off, (key is out and doors closed) disconnect positive battery cable and connect a test light inline between the cable and the battery (do not let the cable touch ground), with a drain the light will be lit. You need to make the light go out to find the drain. Disconnect things one at a time till the light goes out. First disconnect the alternator and voltage regulator plug, then fuses at the fuse box.