Gauge help !!! Please

Do not allow a failed limiter to send full system voltage through you gauges for any length of time. That limiter should fry itself before it fries the gauges but many tumes it does not.
The limiter feeds fuel gauge , water temp gauge and oil gauge if present.
Disconnect and insolate those sender wires untul you can find and fix the problem.
You dont absolutely have to crawl under the car to interupt the fuel sender. You can find that wire behind the left kick panel. Use a sewing needle or saimilar to back it out of the harness connector on the male side.
To repeat what others have said a factory service manual is your most needed tool.