Modernized Engine Wiring

Well, '273 it does matter. If you have the theory backwards, you may have made other mistakes...

If someone rolled in here to FABO saying that increasing compression reduced detonation, you guys would be on him like white on rice. If the rebuttal was that you had "confused detonation with pre-ignition" You would throw the BS flag.

Using a rectifier there is an over complication, and a potential failure point. My question was "why?"

I hung many Motorola Motrac radios in cars in the 70's. We never got near the OEM electrics, running a 4 gauge wire straight from the battery to the trunk. The headlights would dim when you mash the pickle and pound 135 watts into that antenna. Mopars were bad, but the Matdors were worse.

Any regulator can be referenced to battery voltage, but some are easier than others. All internally regulated GM alternators have a remote sense circuit and connection built in. Most Nippondenso internal regulators do as well. Ford 3G / 4G / 6G alternators all reference through the "A" wire which is constant B+ connected.

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.

B.