I have a 1990 F-150 XLT about 2 months a go I had a problem with the tail lights not working after many hours I discovered that the ground lead from the trailer harness was crushed after fixing that problem and resoring the tail lights in about a week every guage except the speedometer quit working on the instrument panel, fuel, voltage, temp., oil pressure, and RPM.

I have checked fuses and all are good....

ANY HELP WOULD BE GREATLY APPRECIATED....

RDH

Not that this is a huge help since I don't have the answer to your question, but I can tell you why the speedometer works out of the guage cluster. The speedometer is a single pair of wires that run from the dash to a sensor mounted on the top of the rear differential. Thats why this still works, because it isn't wired in with the rest of the guage cluster.

Do you know if there is a module that controls these guages???? I can see 1 guage going out but all of them at the same time and no blown fuses?????


RDH :banghead:

I honestly don't know. Have only had the truck for 2 weeks. Sorry.

Saw this posted in another forum on here. Look for it here: http://www1.autozone.com/servlet/UiBroker?UseCase=RG001&UserAction=processModel&Parameters=012