I have an intermittent problem of losing power to my dash. The car is a 2003 track model with 137k miles. I am the only owner. I will lose the blower motor, radio, multi gauge, and my valentine one unit. The speedometer, tack, voltage gauge and oil pressure gauge continue to function and the car runs as if nothing is wrong.

It has happened mostly at freeway speeds. Also the a/c selector button stays lit and seems to function. When I pull over, shut the car off and restart everything is functions normally.

Is there a single plug, ground or sensor that could be causing this. I have not checked for codes as I don't get a "check engine" light.

 

Most likely alternator is going out. When you said blower I thought you meant supercharger.