TR Custom Parts
Mark Hueffman - Owner
- Joined
- May 25, 2001
Put the banded end of the diode terminal onto the 30 wire for the +12 part of the relay coil, which I guess is going to the alternator terminal.
The unbanded terminal end goes to the other coil terminal which I guess is 85 and your switched ground terminal for the coil.
Just remember that a blown diode or shorted wire to ground will kill your battery pronto by running the fan all the time just like a cheesy delay relay.
I'd run the +12 for the relay coil power to the A/C IGN 3 terminal.
Key would need to be on and in RUN, for the fan to run.
I myself have always thought a flap would be the best bet. If you made it spring loaded so that when the air flow of the scoop overpowered the fan the "flap" would open and let the most amount of air possible over the IC.
Scott
Just reading around and I came across this thread. I noticed that the idea seems to involve mounting the fan on the back of the intercooler and that you guys seem to have addressed the issue of a running fan limiting airflow to around it's flow capacity. I had an alternate thought though. What if you installed a "flapper" somewhere on the intake of the scoop so air could flow in but not out. Then you could install a fan on the front of the ic scoop (the large flat area behind the radiator) blowing in. That way when the incoming airflow goes below the capability of the fan the flapper should close so the flow over the ic would always be at least what the fan is capable of. Additionally you wouldn't have to come up with a way to shut off the fan because unless you wanted to build a louvered type of check flappers for under the fan (which would be easy enough) you would have to leave it running to keep air from exiting through that opening at speed. Because there's less restricting the air through the core the fan should stop air from leaving through the front of the scoop and you should get better flow through the ic. Just a thought. james