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THE RESULTS: Guys, I found that guages were both mechanically impaired...the needles were stuck against the inside of the housings. Removing the gauges and tapping on them sharply from the sides freed the needles and allowed them to work again. The fuel level sending unit was shot and cleaning...

I just found another post where you left this comment: "Oh, and one other thing to check... once you verify the gage wiring and ground are good, if you disconnect the "S" wire from the gage and measure resistance from the S wire to ground you should get somewhere between 30 and 240 ohms...

Ok, I pulled the sending unit, cleaned it, and measured ohms at various float arm positions. All the way up (Full), it read ~27 ohms and all the way hanging down (below Empty) it read ~3,000 ohms. Holding the float about level with the bottom of the sender body bracket, it read roughly 100...

Guyfang and Kloppk, thanks for the advice and direction. I will definitely check the wires again. It seemed like the fuel gauge was working for a little while and then just pegged out to the right one day. I'm not sure about the temp gauge. I don't remember seeing it registering since I...

I found several I didn't have just now in Guyfang's pinned post shown below. The one ending in 24-OLD seems to have a lot of stuff in it I need to search thru. Thanks for the tip.

I wonder if I'm missing part of that file. I couldn't find those procedures. I'll keep looking.

I searched thru the only TM I've got (for an 803a, TM 9-2815-253-24) and couldn't find any troubleshooting for fuel and temp gauges. Is there a way to test the temp sensor, fuel level sender, and gauges? Am I missing a TM?

Guys, I bought a good looking MEP-802a that seems to run very well, but the fuel gauge seems to be pegged out way past full and the temp gauge never moves off of being pegged out across the word 'water'. All wires seem to be hooked up and looking good on the gauges and the sensor and sender...