First, my dash lights only turn on when the dimmer switch is on the max position, which means I had to take my dome light out cause I cant have that on while driving at night. I took out the dimmer switch and cleaned it and everything looks normal. Does this sound like a bad dimmer switch or something with the headlight switch wiring. Next my tach likes to sit a 4 grand when the car is hot. When the car is cold it will jump back and forth from normal to 4 grand. The tach fixed itself for a week and the car ran perfectly. When the tach starts acting up the car starts bucking at a certain throttle position. I took apart the tach and nothing was burnt, it looked brand new. I was thinking the TFI module on the distributor but everyone says it either works or it doesnt. Thanks for your help.