20 Most Recent 1993 Harley Davidson FLSTF Fat boy - Page 3 Questions & Answers

TRY TO INSERT A FLASHER RELAY TO THE GROUND WIRE

Hi Tom, the video is pretty good. but you can check another way. Access your battery and start the engine, set your meter to DC 20 volt range if possible if not just DC volts. Connect the meter across the battery terminals if your reg/rectifier is working OK you should get about 13.5 volts at idle this should increase to about 14.5 volts at 4 to 5,000 rpm. In other words as you increase the revs from idle the voltage across the battery should increase until the regulator cuts in at which point the volts should remain fairly stable. Hope this helps and good luck..

I'd look for a major fuse, switch, Relay Melted wires or insulation. So the battery drained overnight? Which indicates a bad short somewhere. I like to use the new led bright flashlight to do a through inspection of the wiring system in the dark.