This is the time to decide if you’d like to install a thermostatic switch. If you go this route save time by running two wires at the beginning!
You can easily add a switch to your dash (or other convenient location.) If you cannot find power inside, you could run another wire back out, and down to the battery’s positive terminal making sure you have a correctly sized fuse installed on the wire. I used the ACCESSORY switch that was already in the dash, fused and unused. There is usually someplace you can tap into within the existing fuse block. This should be from your Engine’s wiring, NOT the House system. Then the wire gets hooked up to a fused power source. Sometimes this is REALLY simple, but often can be tough since the wire MUST go through from the outside to the inside. (The Chassis/Frame IS a ground.) The other (POSITIVE) wire will go to one side of a switch near your driving position.
The negative lead (BLACK) runs over to the Negative terminal of the battery or, even easier, to a convenient screw already in the chassis. This was, by far, one of the easiest I’ve ever done. Ah well, at least when you buy a fan you’ll get the right one!Īccessory Switch is Second From Right, Bottom Row If I were to do this again (NOT!) I would buy an 8″ fan so the total size would likely be 9″. It also hangs down a smidgen since the fan is actually 10″ across even though the specs show it to be 9″ wide. I had very little clearance behind the transmission oil cooler, and the top of the fan hits the surround of the engine radiator’s supplemental fan, but just a very little bit.
Once everything is in place, I’ll put a temperature probe in there and see what’s what. I thought about making it a “pusher” fan rather than a “puller fan” by mounting it on the front, but I believe I will get better airflow by sucking air up from below the front of the engine compartment rather than air from behind the engine and transmission. My Transmission Oil Cooler in The Front Engine Bayįirst I attached the fan itself to the back of the transmission oil cooler. You know, that’s an awful lot of words to just say “fan.” We left off with all the parts assembled and ready to install. So now that I can comfortably(?) lay under the RV and not get soaked, lets finish up the transmission oil cooler supplemental fan install. Maybe I’m just bitter since it put a stop to my relaxation activities. Not that it wasn’t the case last week, but these “meteorologists” seem to make guesses rather than actual predictions based on fact. Posted by chucker on SeptemSeptember 8, 2013įinally, a weekend with no rain forecast.