I also bought new cables for my 72 and I wondered about the small gauge wire coming off the negative cable as well. For what it's worth, I am the opposite of an expert on this, but my research on this forum, and only this forum, indicated to me that 71-72 only have the small gauge wire coming off the negative and it appears to attach to the core support headlight ground. Member/vendor RogerKoop sells some awesome looking repro cables (
http://67-72chevytrucks.com/vboard/s...php?t=625477); the 71-72 version has the wire, while the 67-70 version does not.
With that being said, someone please correct me if I am wrong because I’d like to know the correct answer to this as well. I don’t want to add to any of the confusion and misinformation that’s already out there.
Paul
R.I.P. Tom Petty