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Tech Corner

Technical Q and A for classic motorcycle maintenance and repair.


Trickle Charger Update

Motorcycle Classics tech expert Keith Fellenstein 

Editor’s note: If you’re having trouble with that old Suzuki, BSA or BMW, Keith Fellenstein is your guy. From motorcycle tuning tips to detailed motorcycle engine repair, he can draw from a wealth of experience to help guide you to success. Send questions to: Keith’s Garage, Motorcycle Classics, 1503 SW 42nd St., Topeka, KS 66609, or send an e-mail with “Keith’s Garage” as the subject.

Trickle charger update

Several readers have written to address a glaring omission in my last column regarding trickle chargers and 12-volt positive-ground motorcycles. Specifically, the bare lead of the pigtail will be the hot lead and must be prevented at all times from contacting the frame or you will short the battery to ground with no fuse to stop you. I don’t know how I missed this, but thanks to everyone who wrote to point this out; it’s important.

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