Hello,
My fathers 1992 Riviera has developed an intermittent dash light problem. Every now and then the dash display will go completely blank for a second or two then come back on. At times it will cycle on and off for several minutes, other times it will go days/weeks working perfectly?
Another thing we noticed is that the dash light dimmer switch seems to be inoperative, that is sliding the dash dimmer switch back and forth does nothing, no brightness control whatsoever. This problem is not intermittent and is constant. He never uses the dash light dimmer function, so it's not something we noticed until the dash light problem.
Note, the dash display goes blank no matter which position the dimmer switch is in also. Could these problems be caused by a faulty headlamp switch? Since the headlamp switch is pricey, I don't want to replace it if it's not the problem. Is there a way to check the switch to see if it's faulty? Anything else I should check?
Any help and/or suggestions would be appreciated,
Steven