BlackBird_SR71

This would be only for turning on the Fan while the engine is running. Usefull in some Racing situations such as sitting waiting on starting line before a Hillclimb or Autocross. Or just as a general Override . But I was thinking ( in my Sleep ) . I should be able to do this with a Generic input. Use Grounding Toggle switch on spare Auxiliary Input to actuate Aux #2 output to fan relay. Hmm I could use the AC quicker function as well. Is that Voltage triggered or sink to ground triggered. I think I just answered my own question. Now back to bed...

Because my brain was foggy from a long night and I never thought of that... LOL. Thanks.

Coil dwell table on a Boosted engine. Default Table Axis are Voltage vs RPM. can this be changed to KPA ( MGP ) vs RPM. I realize that Voltage changes would not adjust. But in Normal running, does this really matter all that much? Summer car only.

Atom G4+ ave Coolant fans triggered by Auxiliary Output #2 ( Pin #20) . Works fine controlled by ECU. Would like to add an Manual Override switch which would simply ground the #85 Terminal on the Fan Control Relay. As this is also connected to Pin #20 on ECU, are there any special precautions that have to be made. Such as adding a Diode to wiring to ECU to prevent any type of Feedback.