2021-05-22 Mower Charging Problem Identified

I had a thought this evening and decided to try it despite it possibly being a very bad idea. I wanted to run a section of wire directly from the battery output on the rectifier/regulator to the positive post on the battery. If it put out negative voltage either the wire would get red hot and melt, or the battery might possibly blow. The other outcome could be that it charges the battery.

I took a section of a heavy-duty extension cord which had bad ends on it, cut it, silvered the ends, and then stuck one end onto the battery output on the mower, and the other end got wedged between the battery wire and battery post. I fired up the engine and the multimiter was showing 13.23v at idle. At wide-open-throttle I had 14.25v at the battery. This means that the engine can charge the battery after all.

This leads me to believe that despite having a complete route from the regulator output to the battery, the three ohms of resistance is enough to indicate the battery not being present, so the rectifier/regulator does nothing. I am going to go through the entire harness a second time and clean all the contacts followed by coating them with dielectric grease before reconnecting them. Either something is corroded that I missed OR the ignition switch or fuse box is adding resistance. My bet is on the switch.

Видео 2021-05-22 Mower Charging Problem Identified канала GuretoSefirosu