Quote:
Originally Posted by BlackBMWs  Looks great! I have glass on all my cars. As such, I have a few pairs of OEM US lights. So John, is low speed working now? I'll be doing the same for my Cali. Thanks for the pricing info. Rich  |
It is working, I'm happy to say. As I understand it from another thread, the trouble shooting protocol is: check fuses, check relays, then check the fan by jumping the high speed- low speed electrical connection that plugs into the the thermoswitch on the the top side of the radiator, with the ignition on. If you get both speeds to turn on when you jump both connections, one at a time, to the middle (brown) ground wire, then the thermoswitch is bad. If one or both of the fan speeds don't come on, then the fan is bad. Make a small jumper cable out of speaker wire to test the fan. At least that is what I did.