Modernized Engine Wiring

bohica2:

To battery reference the simple mopar regulator all you need is a relay. Run a 14 gauge wire from the battery, through a 20 amp fuse (to reduce voltage drop) and through the relay to the regulator. Trigger the relay with the ignition circuit. Simple.

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You rase an interesting point B that I hadn’t considered when making this modification last month. I think I have a 10 amp fuse, and smaller wire gage from relay to voltage regulator. My thought was 16 gage would be sufficient from relay to regulator where the run was only about 14 inches.

I’m going to reassess my wiring method based on your suggestion.

For those of you that are trying to picture this modification below is a diagram of how I did it. My 67 has electronic ignition, single ballast, remote Madd like voltage sensing at starter relay, and bypass feed from alternator to starter relay.

This modification has normalized voltage values under the hood for the first time since getting this car four years ago. Addressing bad connections, and replacing bulkhead connector & conductors with new only partially fixed an over charge, and or voltage drop problem. Cutting out the ignition circuit’s bucket of snakes someone referenced earlier did the trick.

I can post photes of where additional relays were installed to complament the charging circuit upgrade if anyone wants to see them.