I am mid process in swapping out my heater fan motor. Motor is in. fans are in the mail, but I tried to drive my car with the dissembled dash and the car stalls after starting. Ground problem right? Yes. I grounded all the circuits I the dash and started the car. Runs great, but draws low voltage. When I turn on the lights all the light oriented lights on the dash light up and the car stalls out, presumably from insufficient voltage. Am I right? What did I break? Or did I just not complete all the necessary dash circuits. The only things not hooked up are the lighter (however I did try connecting and disconnecting the black wires that go to the lighter and the ac (which doesn’t work any way). worst fear: putting (jamming) the drivers side fan cover back on i broke a circuit somewhere back there involved in the head lamps or something. what do you think? ps - I don’t own a multimeter. good time to buy one?