Thanks for the replies. I didn’t have the car when I posted this. I got it back from the shop on Thursday last week. I had to order a new voltage regulator (still waiting for it). I installed a new stereo on Saturday. When I installed the stereo, I discovered some wiring hack stuff. The constant power for the stereo was tapped to the horn power wire. Ground wires leading no where, loose wiring just laying there, etc.. I cleaned up that stuff and I drove it about 80 miles after that. At speed I don’t get a fluxuation on the amp gauge. It only happens at idle. I still need to pull the gauge panel out and look at things. I’m going to replace the voltage regulator, the belt and have the alternator rebuilt to 100amps (to help keep up with stereo system, when it’s finished). Along with a few more grounds. I think I know why gas gauge isn’t working but lost on the temp gauge.