The coach has never been used to tow, so I'm wiring up a tow connector. Thankfully, the factory provided the wire extensions in a bundle secured to the receiver hitch. All the extensions are white in color, but I've traced them all out, but two. One of the two has to be a ground, but it's not a good one, so I'll pull another ground lead. I was hoping the other was a 12V lead, but if it is, it's not working. I was looking at a diagram of a 1998 Patriot coach I saw on the Forum, and it looks like the sixth wire may be for backup lights??--not much use to me. So, if I pull another lead for a 12 volt pin, any suggestions on where to source it?