Wiring or AC?

[don t. - 72gmc]

Aint talked to the wife yet(smile) about the next thing I'd like to do w/my truck.
70 GMC Sierra Grande survivor.

At 53 years, some of the under hood wiring should be R&Red. I've fixed some of it as the need arose. Also wondering about inside the cab wires, rear light wires. I don't have any problems, hate the thought of fixing something that aint broke, but have been down the road of small electrical fires in the way distant past.

Truck has factory air. R12. It has a leak. I have a friend who says he has R12, willing to give me some once I fix the leak. Don't really need AC but it would be nice.

Thoughts appreciated....Don.

PS....Im not a big electrical guy, have never worked on an AC system.