In a message dated 6/18/2006 1:08:12 P.M. US Mountain Standard Time, [EMAIL PROTECTED] writes:
My coolant temp sensor (the one in the T-stat housing) isn't current hooked to anything, and there isn't an obvious orphan wire under the hood. Where should I be wiring it up to? Also, just to confirm, that IS the sensor that controls the auxiliary electric fan, correct? Mac, My 79 300SD, a 116 chassis, has the sensor you describe. The wire comes from a group that is running forward on the frame rail, below the air cleaner and battery. It is probably brown, or maybe brown with a stripe of color, as it merely grounds through the sensor when the temperature setting is reached. Does your aux fan run as soon as the key is turned to the run position? If so, the PO may have cut the tip connector off and grounded it to the frame somewhere convenient. Good luck, Jim Friesen Phoenix AZ 79 300SD, 262 K miles 98 ML 320, 142 K miles