My gas and temp gauge just stopped... TCM says these two and alt idiot light (+ other)are same fuse, alt light works, fuse is good.. Wires giggled to best of my large and fat hands. Any suggestions/opinions/critism/ridicule?? For 65 American..
Sounds like the gauge voltage regulator dropped dead. It supplies an average of 5 volts or so to run the gauges. (It pulses on and off about twice a second! looks crazy on a voltmeter)
Newer cars (1970, at least) have the regulator built into one of the gauges (water, I think) you have to R & R the whole thing. Older cars (1963 at least) it's a separate little dongle. You can buy 'em from the AMC parts people.
I just checked mine (hornet) during checkout. I had a dash lamp on a pair of clip leads. Flashed on and off. Working!