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Harley electrical parts
A motorcycle’s electrical system powers and controls many important functions, from starting the engine to lighting and charging.
Electrical problems can be difficult to diagnose because several components may interact with each other. Correct identification is therefore especially important when replacing an electrical part.
Common Harley Electrical Parts
Batteries
The battery provides electrical power for starting and other systems.
Starters
The starter motor turns the engine during the starting process.
Charging Components
The charging system replenishes electrical energy while the motorcycle is operating.
Depending on the application, charging components can include alternators, stators and regulators.
Voltage Regulators
Voltage regulation helps control the electrical output supplied to the motorcycle’s electrical system.
Wiring Harnesses
Wiring harnesses connect electrical components throughout the motorcycle.
Fuses and Relays
Fuses provide circuit protection, while relays allow electrical circuits to control higher-current loads.
Lighting
Electrical lighting components can include:
- Headlights
- Tail lights
- Turn signals
- Auxiliary lights
- Lighting connectors
Switches and Controls
Switches allow riders to control various electrical functions.
Sensors
Modern motorcycles can use sensors for different engine and electrical-system functions.
Common Electrical Problems
Electrical symptoms can include:
- Motorcycle fails to start
- Weak battery
- Lights not working
- Charging problems
- Blown fuses
- Intermittent electrical operation
- Warning indicators
- Damaged wiring
A symptom does not necessarily identify the failed component.
For example, a motorcycle that does not start may have a battery, starter, wiring, ignition or other electrical issue.
How to Choose Harley Electrical Parts
Before ordering an electrical component, check:
- Year
- Model
- Engine/application
- Existing part number
- Connector type
- Voltage specifications
- Manufacturer
- Fitment information
When a part number is available, searching by the exact number can be one of the most useful ways to narrow down compatible products.
Electrical Safety
Electrical work should be performed carefully and according to the motorcycle manufacturer’s service information.
Disconnecting the battery when appropriate, using the correct replacement fuse rating and avoiding damaged wiring are important considerations.
If you are not comfortable diagnosing electrical systems, seek professional assistance.
Shop Harley Electrical Parts
Browse the Harley Electrical Parts category at Harley Parts Warehouse to find available electrical components.
Frequently Asked Questions
What are common Harley electrical parts?
Batteries, starters, charging components, regulators, wiring, fuses, relays, switches, lighting and sensors are common electrical components.
How can I find an electrical replacement part?
Start with the motorcycle’s exact year and model and, whenever possible, the original manufacturer’s part number.
Can similar-looking electrical parts be interchangeable?
Not necessarily. Electrical specifications, connectors and mounting arrangements can differ.