PWM cooling fan(s) control using ECM - Lateral-g Forums

**andrewb70** · #1 07-07-2020, 10:44 AM

Quote:

Originally Posted by dontlifttoshift

Derp. That's a pretty easy way to do it. 12v from trinary = fan runs at XX%

Well done.

And yeah, just did a C7 fan with a Terminator in a 55 Pickup and its awesome.

Donny,

Give me a call when you get a chance. I think you have my number. If not, check your PM.

Andrew

**130fe** · #2 07-08-2020, 04:04 AM

Andrew, do you think the C7 fan would work well with the LS3 GMPP fan wire (without PWM)? I was the one that asked you questions about the C7 fan dimensions on IG yesterday. I currently have the Entropy radiator (and it’s controller) am looking at other radiator/fan options.

**andrewb70** · #3 07-08-2020, 05:15 AM

Quote:

Originally Posted by 130fe

Andrew, do you think the C7 fan would work well with the LS3 GMPP fan wire (without PWM)? I was the one that asked you questions about the C7 fan dimensions on IG yesterday. I currently have the Entropy radiator (and it’s controller) am looking at other radiator/fan options.

Chris,

The fan wire on the GMPP harness is just a ground trigger for a relay, and will definitely not work with the C7 fan. Spal does offer tidy little controllers for their brushless fans, which I'm certain will work with the C7 fan. However, they are not adjustable, and you have to make sure to pick the right one for your thermostat, otherwise the fan will run all the time. It's definitely not as elegant as what I did on Sean's truck.

Andrew