I put around 2000miles (and changed my engine oil), before I did my first towing. I then towed a roughly 2000lb squaredrop all over. Toured around northern NM and southern CO.
Went over 10,000 ft passes. Down washboard roads. Through mud roads, that several vehicles were stuck in (one was a...
Continued from original thread:
https://www.4runner6g.com/forum/threads/trailer-brake-controller-prewiring.2385/
I just plugged the REDARC TPH-021 into the white connector, and it seemed to have all the correct voltages.
On the end that plugs into the REDARC:
White looked to be ground.
Black...