PWM radiator fan controller

[Samckitt]

I do have the E38 ECM and it is pwm capable I have the 2011 Corvette program already loaded into it. I will look hard at the C6 PWM setup. I have HP tuners so the tuning aspect is not a problem. I was already thinking of a 70 amp relay if I went with the Derale setup. You just confirmed that would work. So let me look into what parts I will need for the C6 route. The only tricky part would be the "trinary" switch. I have an "Old Air" setup on the car now so I would have to come up with a solution to that little problem.

I went to the junk yard & found a couple switches, I cut the hard line a few inches on either side to have installed in my system. AC guy near me can take the screw in base & solder them onto an elbow.





I had previously purchased the connector & pigtail from EFI Connection & it plugs into this switch.

Here is the pigtail:
https://www.eficonnection.com/home/p...nector-pigtail