REQ: Electrical help - 83 Honda Shadow 750



Alright, Im finally frustrated enough to ask for help. 1983 Honda Shadow
750C. The battery is not charging. I can charge it okay with a charger,
but after an hour on the road, the battery is too weak to power the starter.
This is, needless to say, a serious inconvenience.

For you diagnosticians out there, here's what I know:
-The battery is brand new. (I first thought that was the problem.)
-The rectifier/regulator was replaced with a junkyard part that was bench
tested to be okay on the rectifier side. No change in the symptoms.
-The alternator leads (3 yellow wires) were checked for continuity with an
ohmmeter. All seem okay with about 6 - 8 ohms each.
-With the bike running, the alternator leads were checked for AC voltage
going in to the rectifier, All 3 yellow wires showed about 14.5 V to
ground. That's probably a bit weak, but is it enough to prevent charging?

Any tips/help on getting me back on the road?
(FWIW, no shops in my area will touch a bike this old. I'm on my own here.)

TIA,
Joe



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