A 12 volt draw on battery from a one wire alternator

Quick update and question. Should I run a wire from the Alt fld to the voltage regulator or just ground that field?

I don't know what you ended up with

.....Your alternator has one or two field connections? ONE means the field is grounded, and to use a 69/ earlier regulator

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TWO field connections means use a 70/ later "flat" regulator like you showed in one photo

THIS GOD DAM SOFTWARE DID IT AGAIN!!! HOW DO I EDIT THIS CRAP WHEN I CANNOT SEE THIS CRAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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And of course what you started with is an aftermarket thing hooked to the alternator

SEE THIS!!!!!! THIS IS YOUR DAMN NEW IMPROVED SOFTWARE!!!!!

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"I think??" you are using the 70/ later regulator and an isolated field alternator (two field terminals?)

Then this is the basic diagram. Again, the VR flange MUST BE grounded well

The important thing here is "IGN 1" (ignition 1) which is your ignition "run" power coming FROM the ignition switch. This is the dark blue that ORIGINALLY fed your old regulator AND the ballast resistor. THAT power goes as shown on the diagram to the regulator terminal marked "I". NOTICE that also branches off and feeds either of the two field terminals

The "F" from regulator goes to the remaining field terminal

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