67Dart273 said

Start by reading this

http://www.madelectrical.com/electricaltech/amp-gauges.shtml

There is absolutely NO WAY in hell that I would put a great big alternator like that on a stock system without bypassing the ammeter. Even Ma knew this wiring was marginal. There exists what is known as "fleet / taxi" wiring which was used on the 60 / 65 amp optional alternators. This is documented in the service manuals. These still used the ammeters, but Ma ran heavier gauge wiring through the bulkhead separately from the original bulkhead connector, which helped.

Before Al Gore invented internet, I damaged the bulkhead connector in my old 70 Road Runner back in the day, and drilled out the connector and ran heavier gauge wiring through the connector. This horrid faded old photo was taken about 73 or 74

http://moparforums.com/forums/f62/my-old-ride-back-day-596/

Click to expand...