Naa electrical woes

firebyprolong · Mar 22, 2015

Ok I posted a few weeks ago about my melting Cable incident. Even though many of the things suggested were common sense to you fellas I really appreciated all the help to the electically challenged. With the help of a multimeter I found a direct short to ground in the VR. Kind of an light bulb moment when I pulled the VR and suddenly no short to ground on both sides if the harness. I think I've isolated the issues but in truth am still wandering around in the dark. I can't test it running because of the short, so my question is how should power be running through that VR so that I can make sure that it's bad with the miltmeter before I replace it? if I've looked over something huge here that I should be please let me know.

Bob · Mar 22, 2015

There should be NO continuity to ground from the BATT terminal on your VR with the engine off, cutout points "open".

Still don't know what you have going on because you said you had a battery cable getting hot.

If the regulator IS in fact dead-shorted, it is connected up with with much smaller wire than the battery cable, and the wire should simply burn off, before the battery cable heats up!

ANYHOW, you don't need the VR OR the generator to verify the engine will start/run.

Simply disconnect the "hot" lead from the VR and tape it up, and disconnect the wires at the generator.

It will NOT hurt the type of generator you have to run with the wires disconnected.

Once you get the engine running well, than you can troubleshoot the charging system.

Den N Ms · Mar 22, 2015

Firebyprolong,Take the cover off of the regulator and look for contact points stuck(welded) together.If stuck you might try prying them apart and clean them up if not fried to bad.Then try it again,might save your regulator.

firebyprolong · Mar 22, 2015

ok checked contacts in VR both open and close. Replaced bat wire to VR and bingo no short. I think it was grounding to the cover through a wear mark on the back of the wire that I could not see till I pulled the wire. Hooked everything back up polarized the gen and started her up. it showed +11 to +15 and then settled on + 11 amps. Should be good to go right? By the way the original melted cable post I should have been a little more clear. No Insulation actually melted it just got very very soft and I replaced the cable.

Naa electrical woes

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Bob

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