On my 1993 Tempo, lately the temperature gauge has been completely erratic. Mostly showing cold but sometimes normal. It can change suddenly. There is plenty of coolant and the engine temperature is normal. I was going to replace the sender unit but I've noticed the fuel gauge may possibly be acting up also. The fuel gauge has always been somewhat erratic since I got the car in 1997, but lately I saw it showing less than full (a bit less than 7/8) very shortly after I had just filled it. I am thinking perhaps there is a gauge voltage regulator, and if so perhaps it's faulty? Also had the upper (only) climate control panel lights become first intermittent (would go off when any button was pressed but then come back on) and now are off constantly. The lower climate control panel lights are OK. I wouldn't think these are related unless there is a problem in a connector. Could anyone point me to what it might be? Is there a voltage regulator for the gauges?