General Category > General Discussion
1975 850T electric mistery
Stretch:
Good advice on the ignition switch and fuze block; don't forget the kill switch, too.
-Stretch
n3303j:
My T3 drove me nuts with a similar problem. .
Found out the battery NEGATIVE cable was making a poor connection at the chassis. Clean it up, tighten it up and it all was history.
Woodrow:
OK Thank you , I replaced the key switch in the last few years ( this is the only bike I havent kept a record book on and I regreat it ). I found the old switch . Just how do I take that apart , I got nothing to loose.
This morning , at rest cold battery is at 13.75 . Key on , lights, oil.gen Netural battery still at 12 .75 or so. Start up , gen light goes out . Voltage 14 volts at 3500 rpm.
Today Im going to start a record book . also email a print shop to have a wiring diagram printed.
So Im going to test ride some more , taking a cell phone , credit card , fire extinguisher. confortable walking shoes. ect.
I do rember having the fuse box off the bike . I can do that agan just for a look .. Woodrow
Woodrow:
Im going to take another closer look at the battery connections. Why not ?
n3303j:
--- Quote from: Woodrow on July 19, 2026, 08:54:23 AM ---Im going to take another closer look at the battery connections. Why not ?
--- End quote ---
Pull them apart. Clean them thoroughly. Grease them up. Reassemble.
Had recent problem with headlight shell ground on the T3 (after installing excellent Bender harness). There is a ground tab riveted to the shell. Turns out 50 years of corrosion in that area insulated the tab from the shell. Drill out rivet, clean all metal parts thoroughly, pack assembly with grease then re-rivet and all problems went away.
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