Brake Controller caused windows and mirrors to fail

How on earth did you plug the 3rd gen harness into your 2nd gen? I bought a Redarc that came with the 3rd gen harness and the plug was a totally different style - there would be no way to accidentally plug it in. Not sure if it's helpful at all, but here's my experience modifying the Redarc 3rd gen harness (with use of a plug from an OEM trailer harness) to fit my 2nd gen.

https://www.tacomaworld.com/threads/redarc-tow-pro-elite-install-in-2nd-gen.675690/#post-28120713

Unfortunately, I still haven't gotten to test the brake controller with an actual trailer. But, otherwise, I haven't had any issues.

 

That is a very helpful thread clenkeit! Thanks! I'll take this convo over there