[dennislbrooks]

Toolboxchev, BR3,deadparrot, phat69, franken, Dave12, Davepl, vetvette all --- I did upgrade to a new acdelco 12si 3 wire --78 amps, seems to work well and does not go below 12 volts with everything on at idle. I used the external regulator wiring mod that davepl posted in another thread.

Red to white and brown to blue -- on ext reg pigtail - then white to alt 2 and blue to alt 1.

I do not have a alt dummy light but vehicle turns off ok, seems to charge good.

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Does a stock 67 with gauge options have a built in resistor for the exciter wire on a 10 dn alt and ext reg.?
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Prior I changed the amp gauge to a voltmeter.