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Electrical malfunction detection system — Harley-Davidson patent US5057814A (1991)

PatentUS5057814A
TypeUtility patent
Filed1989-07-24
Granted1991-10-15
InventorLance C. Onan
SystemElectrical & ignition

“A protection system has a power supply connected to lamps by a low value resistor. The resistor is part of a voltage divider system which provides input signals to a number of comparators. These comparators provide appropriate signals to a microprocessor to indicate normal operation. When a…”

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Drawings (3 sheets)

Electrical malfunction detection system — sheet 1Electrical malfunction detection system — sheet 2Electrical malfunction detection system — sheet 3

Parts for this system

32-3124
Ultima Output Starter Shaft Spring
$4.19
17-5873
Ultima Starter Gear Spacer
$4.19
17-0601
Kick Starter Arm Bolt Kit
$6.32
32-0404
Plain Rocker Style Handlebar Switch
$6.32

Check fitment first — add your bike and we flag what fits.

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Drawing from the US patent record (via Google Patents). A patent shows the invention as filed, not necessarily the production part on your motorcycle — confirm fitment for your model and year. Independent aftermarket retailer, not affiliated with Harley-Davidson, Inc.