Spal E-fan with PWM Controller

Installed a Spal High Output 12" pusher fan on my Hummer H3. Vehicle has 5.3 V8 with E67 PCM. Used PWM controller from a Chrysler, and wired that up to pin J3-49 on my PCM. Using HP Tuners, I programmed fan speed maps based on ECT and A/C pressure. Fan speed is commanded by the PCM, and it sends a PWM signal to the controller which then varies the voltage to the fan. OE style control using a relatively cheap setup. Fan was $130 Controller was $30 Various wiring/loom/supplies were around $25