PWM cooling fan(s) control using ECM

[samckitt]

I was at the junk yard today looking for some other stuff & came across a Cadillac that had a fuse box for the Max fuses only. I removed a couple terminals out of it & used that to add another circuit to my GMPP controller harness fuse box. I also discovered that the GMPP harness fusebox was used on full size GM trucks, Suburbans, & Tahoes in the mid 90's.

Here is pic of one I found in a Suburban:





On my fuse box I cut the bus bar that feeds power to the Max fuses so I could pass the wires through the bottom of the box instead of routing it outside like it came from the factory. I moved those fuses up 2 spots & added the one for the fans. I found a Max breaker at the junk yard. I wrapped the wires with a zip tie to keep them from rubbing the buss bar where I cut it.