Gauges and Radio problem

[jchristie600]

Hello everybody. First time poster long time troller. Anyway I'm having some problems with my 2005 F250 6.0 The dash and radio turn on/off as they please. Seems like a loose connection cause the bumpier the road the more on/off it is. The lights on the dash will stay on when I have headlights on but the gauges will still go dead. I have dug around under and behind the dash and cant find any loose or broken wires. Has anybody had this happen to them?

[roary]

Question for you, when your gauges go dead, do they ever act like you just started the truck? For example they do the full sweep when they come back on?

I had this issue for awhile, and it was actually a bad connector on the alternator causing the problem. Once that was replaced I haven't had any other problems.

Also pull your fuse panel, and make sure first that all the fuses are seated well and secondly check the back of it to make sure all the plugs in the back are seated securely. It's not hard to do, only take a 10mm socket and a couple of minutes.

[jchristie600]

No they don't do a full sweep they come back to the correct current reading. I suppose this would mean I'm not losing accessory power through the ignition?

[spastik monkey]

Sounds like a bad conntection at a fuse panel. Check all your fuses that are related, and check your alternator output and battery connections.

[jchristie600]

Doing some more digging and there is a relay that clicks every time the dash/radio goes on and off. I switched the relays around and the problem doesn't change. Does anybody have a wiring diagram? I don't even have an owners manual to know which fuses/relays I should be checking.