Egg on face
OK guys I am really confused now. I'll start by quoting the GM manuel for 2003 Silverado page 5-117. STUD #1. Auxilliary Power (Single Battery and Diesels Only)/Dual Battery (TP2) Do not install fuse. I took this to mean that with dual batteries and with diesel not to install this fuse.
I just went out and with a voltmeter checked the + & - pins and no volts. Put fuse in and yep 14 volts. So I was wrong. But I have question. Back in Dec. I picked up the 5er at the dealer after hours. The front legs would not work. Hook up plug to truck and all was normal. So I deduced that power was getting to batteries. Hope you understand my confusion.
You had good info, Bill.
Sorry about the earlier posting.
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