[parsonsj]

The A/C pressure sensor is wired in at pins J3-21 (reference ground), J3-37 (reference 5V), and J3-57 (signal). The PWM control wire is J3-64.

There is no EOT sensor wired directly to the ECM, so that part of the equation is out. Have to rely on ECT for that, which is obviously just fine, especially if you use the C&R Racing water to oil cooler. Using the C6 PWM, the cooling fan PWM control wire from the ECM (J3-64) goes to connector 6.

Get all that wired correctly and the rest is just tuning via HP Tuners (which Dave told us about way back at the beginning of the thread).

Did we ever figure out if the one fan speed wire could drive two PWM controllers?

Thanks guys!

ps. Many thanks to Scot McKittrick for getting me the E67 pinout. Using that, my 07 Z06 Helms books and an online LS4 book is how worked all that out.