Have you tried your BackOff yet? I've wired mine in every combination I could think of and all I could get it to do is flash all the time. I know I wired it correctly the first time. It's possible I got a bad unit from the factory. I'm going to ring them up today and talk to them some more. I'm sure the Black/Yellow wire is the correct one. Please let me know if you have better luck.
The Posi Lock connectors work great! Thanks for the tip. I'll be getting an assortment of them.