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1972 Honda CB100K2 Brake-Light Switches

A rear stop-light repair on the 1972 Honda CB100K2 can involve the electrical switch or the spring that operates it. Inspect both before ordering. This selection provides a replacement switch and a separate spring with its own Honda replacement reference.

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Honda CB750 CB550 CB500 CB450 CB400 rear brake light switch

Honda CB Rear Brake Light Switch

$10.33 USD
12-0008
Replace your rear brake light switch with this Rear Brake Light Stop Switch. Exceptionally broad fitment across the SOHC CB750 lineup and virtually the...
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Honda CB750 CB125 CB100 rear brake light switch spring 35357-107-010

Honda CB750 / CB125 / CB100 Rear Brake Light Switch Spring ~ Replaces 35357-107-010

$7.00 $6.50 USD
You save $0.50
73-0848
Replace your rear brake stop switch spring with this Rear Brake Light Stop Switch Spring. This is the spring that attaches to the rear...
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1972 Honda CB100K2 · Brake-Light Switches Buying guide

Identify whether the switch or its spring needs attention

The switch and actuating spring are separate ordering choices. Compare their fitted connections and attachment points after diagnosing the fault, rather than replacing the whole arrangement solely because the brake light is not working.

Parts to consider

Honda CB Rear Brake Light Switch Rear Brake-Light SwitchReplacement rear stop-light switch with CB100K 1970–72 application. Compare the fitted mounting and wiring before ordering.View part

Related parts: Rear Brake-Light Switch Spring

Choose the switch after checking its operation

A non-working brake light does not identify the failed component by itself. Check the circuit using the appropriate service information, then compare the switch mounting and wire arrangement. Keep the ordering decision tied to the fault found rather than assuming a switch replacement will resolve it.

The spring has its own replacement reference

The linked rear brake-light switch spring attaches to the stop-light switch and replaces reference 35357-107-010. Its application includes CB100K 1970–72. Inspect the existing spring and attachment points when planning the switch repair so a missing or damaged connection is included in the order.

Ordering questions

Can I order the operating spring separately?

Yes. The related rear brake-light switch spring is a separate product, with replacement reference 35357-107-010. Compare the spring attachment on the motorcycle before deciding which part needs replacement.

Does a brake light that stays off prove the switch is faulty?

No. Diagnose the circuit and switch operation with the appropriate service information first. Then compare the fitted switch mounting and wire connections when ordering the component identified as faulty.

What must be confirmed for a rewired motorcycle?

The replacement switch description gives no connector map, wire count or electrical rating. Record the installed mounting and wire arrangement and request those missing details before selecting it for a rewired machine.

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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