Here's the wiring diagram for my install. It was very straight forward. By installing the charge controller in the battery compartment, I didn't have to cut any of the FWC wires at all, and putting the gauges in their cutout was also very convenient.
It seems that the SAE jacks that are installed in the Hawk might have the polarity backwards. I found that the pigtails that FWC provided had the pigtail wire marked positive connected to the black inside wire, and the same for the negative pigtail to the red wire. It's just something to check if you use the FWC SAE pigtails.
Edited by Charlie, 02 June 2019 - 03:44 AM.