I recently did lots of work under the hood of my '55 2nd. It has a late 60's 350ci, all 12VDC system. Before this work, I didn’t have this problem. Electrically, I did a lot, including: new 3-wire alternator (built-in voltage reg); new electronic ignition (coil, dist, plugs, wires); new fuse panel; elec radiator fan; and electric windshield wipers. I removed the old point ignition resister, and removed the old point type regulator from the circuit (it's still on the firewall, but no wires). My old original Amp gauge would swing wildly between charge & discharge. I worried about it, so I bypassed it. Now the only negative symptom is my dash and headlights flash bright/dim as the RPMs rev up as I drive. When I come to a stop and idle, they appear normal. A friend thinks my voltage regulator is half-wave rectifying (i.e. passing AC current). The truck runs great, the battery charges, etc. So what’s up with the pulsing amp meter and lights? :confused:
