I monitor my trans temp with a aeroforce gauge which plugs into the osb port. It will also give you readings on a host of other vitals.

 

Great write-up. Exactly how I want mine to look when finished. Small footprint, effecient, and quality parts. The parts are on order. I'm planning to add the B&M temp gauge /sensor #80212.
Thanks for posting such good pics and info.

 

bring back an old thread but iv got a few questions

1. could you run the power supply for the fan to the stock cables for the radiator fan so when it turns on the tranny cooler fan will turn on, assuming that these would be the best conditions for the fan to be on. well of course you can but does anyone know if the stock wireing will take the amps of both fans?
I see max draw of the spal fan is 5.5 amps.

2. do you think having one of the spal fans on the trans cooler would infulance the cooling to the radiator at all? good or bad.

3. run a relay into the stock fans wiring before the spal wiring joins it so you could turn both off at a switch from in cab before water crossings and bog holes.

Just some thoughts.

 

I don't think I would tie it in with the existing cooling fan reason being the amp draw just might be more than the circuit is designed for and really the only time it's needed is when your crawling.

As to any affect on the cooling Ive seen none and mine is monitored with my Aeroforce gauge.

I would wire it on its on circuit. I did mine a little different than dadgummit I wired mine with a toggle switch and a fuse at the battery. That way I can turn it on when I'm on the trail and moving slow. I might also add that even tho it says 5.5 amps max mine would blow a 7 amp fuse I stepped up to a 10 amp. So be sure to use heavy enough wire.

 

Why not just wire in a trigger from the rad fan, so it turns on a relay when it cuts in, and you can run the power for the second fan itself directly from the battery.

 

This is the way I would do it if you wanted it to automatically turn on. I used the direct relay because I figured I would only need the fan off road or in bad traffic.

 

Awesome write up!! I order the parts today but was wondering if you could tell me what to order from Painless wiring. I really am not good with the wiring / relay stuff. Mechanical installation no problems but electrical not so much. Thanks in advance.