Wiring harnesses

I've been using the M&H harnesses that Year one sells for many years on my 3 1970 Darts and have always found them to be right on target. I've watched folks spend enormous amounts of money or time (read hundreds of hours) using one of the universal kits for wiring. The factory alternators in 1970 ran from 34 amps to 60 amps for fleet vehicles (cop cars and taxi cabs and such) and these fle et vehicles came from the factory with the main power wires through the firewall with a grommet and bypassing the bulkhead connector. You should do the same. Unless you have something aftermarket with huge power drains, I can't imagine why you would want to use an alternator over 60 amps. I found out the hard way that many alternators these days put out 100 amps or more and fried a whole set of underhood and underdash wires for my trouble with this "upgrade".