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1981 Honda CB650 Switches & Sensors

Identify the affected circuit before choosing a switch for your 1981 Honda CB650. The rear-pedal switch operates the brake light, while the oil-pressure switch serves the warning circuit. Compare the fitted component and confirm the fault before ordering.

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Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Switches & Sensors

Honda motorcycle parts

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Honda CB900 CB750 CB650 CB550 CB500 oil pressure switch 37240-P13-013

Honda CB Oil Pressure Switch ~ Replaces 37240-P13-013

$23.95 USD
73-0825
Replace your oil pressure switch with this Oil Pressure Switch, replacing OEM #37240-P13-013.Key Features• Oil pressure switch• Replaces OEM #37240-P13-013• Honda part name: Switch...
Honda CB1100 CB1000 clutch lever brake light switch 35330-413-003

Honda CB Clutch Lever Brake Light Switch ~ Replaces 35330-413-003

$15.95 USD
29-7029
Replace your front clutch lever safety stop switch with this Clutch Lever Stop Switch, replacing OEM #35330-413-003. This is the switch that allows the...
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Honda CB750 CB650 rear brake light switch 35350-MG7-405

1979-82 Honda CB750 / CB650 Rear Brake Light Switch ~ Replaces 35350-MG7-405

$15.82 USD
27-5523
Restore reliable brake light activation with this Rear Stop Light Switch, designed as a direct replacement for several original Honda rear brake switches. This...
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1981 Honda CB650 · Switches & Sensors Buying guide

Choose the switch by its actual function

These switches have separate warning-light and rear stop-light applications. Match each replacement reference to its own mounting position and connections, then check the diagnosed fault before selecting the part.

Parts to consider

Honda CB Oil Pressure Switch ~ Replaces 37240-P13-013 Oil-pressure switchReplacement switch for reference 37240-P13-013.View part 1979-82 Honda CB750 / CB650 Rear Brake Light Switch ~ Replaces 35350-MG7-405 Rear brake-light switchRear-pedal stop-light switch with listed CB650 application.View part

Compare the rear-pedal switch

The rear brake-light switch replaces references 35350-MG7-405, 35350-425-003 and 35350-MJ0-921. Compare the existing mounting and electrical connection before ordering. A modified pedal or repaired loom requires its own check of how the switch is operated and connected.

Check warning and stop-light circuits

The oil-pressure switch and rear brake-light switch serve separate circuits. Diagnose the warning or lamp fault using the correct service information before buying a replacement. Do not treat a switch replacement as proof that an underlying oil-pressure or wiring problem is resolved. If the oil-pressure warning stays on with the engine running, stop the engine and have actual oil pressure checked before riding.

Ordering questions

Which references identify the rear brake-light switch?

The selected rear-pedal switch lists 35350-MG7-405, 35350-425-003 and 35350-MJ0-921. Compare those references together with the fitted switch and its mounting before ordering.

What if the rear pedal or wiring has been changed?

Compare the actual switch mounting, how the pedal operates it and its electrical connection. A changed pedal assembly or repaired loom should be checked separately from the original model-year application.

Should I replace the oil-pressure switch just because the warning stays on?

Confirm the cause using the correct service checks first. The warning can require investigation beyond the switch; a replacement part alone does not establish that oil pressure is satisfactory.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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