I don't have a wiring diagram to give you a definative answer.
Do the rest of the electrics work; lights dashboard lights heater fan, etc? Or is it just those 3 items that go out.
If it is just the 3 items then you probably have a bad ground that they share that needs to be cleaned and tightened.
Let me know about what fails. But I probably can't get you the location of the ground. You will have to trace it from one of the failing components.
Saturday, December 8th, 2012 AT 3:46 PM