Flickering or pulstating Headlights

MopaR&D said
Sorry we're posting really quick check post #59. I thought the bad connection/short would be in the ignition switch itself?

Well that's what I'm not sure about.
Normally there's very little current flow with the key in run.
Trying to figure out where the current was flowing. Then we can figure where the drop may have occured.
When you removed the ammeter, did you tie the two wires together behind the dash?

MopaR&D said
Well it seems to be all fixed now but... no I left the connector plugged into the regulator and measured straight into the blue wire (punctured it with my pointy multimeter leads) and got 1.5 volts with the key turned to Run position with the engine off.

Got it.

MopaR&D said
The Mallory box has power leads going straight to the battery terminals and gets an Ignition On signal from the blue wire that used to go to the coil positive on the old factory points setup.

OK.