Havn't had a whole lot of luck searching the web, but I have a 52 Wagon and I'm looking for a good
complete system. Making one myself is out of the question.
check the vendors out. I am not sure what they carry in the way of harnesses. Are you sticking with (or does it have) 6v or switching to 12v? If you've mentioned it in a previous post I missed it.
if you type in painless in the search bar of this site it will pop up with stuff people have posted.