Harley Electrical Parts: Sensors & Charging

About Electrical

Electrical trouble tends to show up as a bike that cranks slowly, loses power or throws a fault code, and this page gathers the parts that fix those problems. The catalog leans heavily on NAMZ Custom Cycle, whose plugs, wedgelock tools, fuse kits and load equalizers make up the largest share.

What is available

Charging system parts include Compufire 40 amp three-phase stators and vented charging systems for Evolution and Twin Cam Touring and Softail bikes. Sensors include Cycle Pro crank position sensors and O2 sensor extension kits from NAMZ. Wiring supplies range from Deutsch DT plugs and Mate-N-Lock connectors to 4 gauge Grote bulk battery cable. Koso offers a 7 inch Zenith LED headlight, and Sp Connect lists a wireless power bank.

Shop smart

Electrical parts are year and model specific. Stators and regulators differ between Evolution, Twin Cam and Milwaukee-Eight, and sensors match OEM part numbers. Check any OEM number in the title against your service manual, and replace connectors when you replace a failed sensor. A battery that tests low is often a charging problem, so test the charging system before buying a new one. When running new wiring, use the correct gauge for the load, protect connections with sealed connectors, and fuse any added circuit close to the battery.

Related pages: batteries, switches and illumination.

Electrical FAQ

How do I know if my stator needs replacing?

A bike that does not hold a charge with a good battery, or a stator that reads out of range on a test, usually points to a stator or regulator problem. Check your service manual for the test values.

What is a load equalizer?

The NAMZ load equalizer is a solid-state device used when you add LED lighting to bikes that expect incandescent bulb loads. Read the listing for which models it supports.

Are Deutsch connectors listed?

Yes. NAMZ lists DT plugs, wedgelocks and a matching tool.

Do you have O2 sensor extensions?

NAMZ lists O2 sensor extension and bung reducer kits for Touring and Softail bikes, useful when changing exhaust.

What battery cable is available?

Grote bulk battery cable in 4 gauge and 25 foot lengths is listed for Harley and Indian V-twins.