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1971 Honda CB100K1 Electrical Parts

A careful electrical-parts order starts with the component you have inspected. For the 1971 Honda CB100K1, these choices cover a rear brake-light switch and a turn-signal lamp gasket, with different checks for wiring connections and lamp sealing.

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Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

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...
Honda CB750 CB450 CB350 CB200 CB175 front cable clip 45465-270-000

Honda CB Front Cable Clip ~ Replaces 45465-270-000

$7.00 USD
73-1116
Keep your wiring clean and secure with this Front Cable Clip, designed to hold the stop switch wires neatly against the front cable. Replaces...
Honda CB750 CB500 CB450 CB400 turn signal lamp gasket 33443-268-671

Honda CB Turn Signal Lamp Gasket ~ Replaces 33443-268-671

$4.61 USD
11-2085
Service your early CB750 or classic twin turn signal with this Turn Signal Lamp Gasket, replacing OEM #33443-268-671. Pairs with our signal lens #11-2110...
New
Honda CB125S CB100K turn signal flasher relay 38310-428-671

1970-82 Honda CB125S / CB100K Turn Signal Flasher Relay ~ Replaces 38310-428-671

$15.82 USD
12-0104
Replace your CB100 or CB125S turn signal flasher with this Turn Signal Flasher Relay, replacing a range of OEM references (#38310-428-671, #38300-GF0-405, #38300-243-670, #38300-089-671,...
New
Honda CB900 CB200 CB175 CB125 5.25 in. battery band 95012-15001

Honda CB 5.25 in. Stock Type Battery Band ~ Replaces 95012-15001

$8.95 USD
99-4991
Upgrade or restore your motorcycle’s battery mounting system with this Stock Type Battery Band — a quality replacement designed to keep your battery securely...
New
Honda CB750 CB500 CB450 CB350 tail light cover gasket 33709-077-671

Honda CB Tail Light Cover Gasket ~ Replaces 33709-077-671

$7.00 USD
11-2168
Replace the tail light lens gasket on your early '70s Honda with this Tail Light Lens Gasket, replacing OEM #33709-077-671. Fits the 1969-71 CB750K...
New
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Honda CB200 CB175 CB125 CB100 Denso ignition contact points 30202-107-004

Honda CB200 / CB175 / CB125 / CB100 Denso Ignition Contact Points ~ Replaces 30202-107-004

$8.95 USD
14-0004
Replace your Nippondenso-ignition points with this Denso Contact Points (1 piece), replacing OEM #30202-107-004 / #30202-216-004 / #30202-107-154.Important: these points are for Nippondenso ignitions...
Honda CB125S CB100K bar switch assembly left (clutch) side 35300-107-671

1970-74 Honda CB125S / CB100K Bar Switch Assembly ~ Left (Clutch) Side ~ Replaces 35300-107-671

$28.95 USD
12-0311
Fit the polished left-side handlebar controls on your CB100 or CB125S with this Bar Switch Assembly for the Clutch Side in polished finish, replacing...
New
Honda CB750 CB500 CB450 CB350 front fork reflector 33741-315-000

Honda CB Front Fork Reflector ~ Genuine Honda OEM 33741-315-000 ~ Replaces 33741-315-000

$42.95 USD
99-5113
Replace a damaged or missing front fork reflector on your vintage Honda motorcycle with this small-diameter amber front reflector. This replacement part is designed...
Universal motorcycle spark plug cap LD05F

Universal Motorcycle Spark Plug Cap ~ LD05F

$8.95 USD
23-3118
Spark Plug Cap - LD05F for custom or restoration work on classic Honda CB motorcycles.  Key Features Aftermarket part Sold as: Each Fitment /...
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New
Honda CB125S CB100K ignition switch 35100-324-761

1970-75 Honda CB125S / CB100K Ignition Switch ~ Replaces 35100-324-761

$15.26 USD
29-0082
Replace your ignition switch with this Ignition Switch with 2 keys, 2 wires. Replaces OEM #35100-324-761 / #35100-111-671 / #35100-240-010 / #35100-324-000.Key Features• Ignition...
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1971 Honda CB100K1 · Electrical Buying guide

Order around the switch or lamp you are repairing

Start at the fitted assembly. A switch order needs a mounting and wiring comparison, while a lamp-gasket order depends on the lens and housing. Keep those checks separate as you plan the repair.

Parts to consider

Honda CB Rear Brake Light Switch Rear Brake-Light SwitchRear brake-light stop switch with explicit CB100K 1970–72 application.View part Honda CB Turn Signal Lamp Gasket ~ Replaces 33443-268-671 Turn-Signal Lamp GasketTurn-signal lamp gasket, reference 33443-268-671, for the CB100K 1970–72 application.View part

Related parts: Rear stop-switch operating spring · 6V two-prong flasher relay

Check the separately offered operating spring

The linked spring attaches to the rear stop-light switch and replaces 35357-107-010. Check its condition and attachment when assessing the switch. The switch’s package contents do not confirm a spring, so establish what is supplied before ordering both pieces.

Treat a lamp seal as its own repair

The turn-signal gasket uses replacement reference 33443-268-671. Check the lens edge and housing where it sits, especially if the signals have been changed. A new gasket belongs in a sound, matching assembly; visible damage elsewhere should be included in the repair plan.

Ordering questions

Can I order by model year if the electrics have been changed?

Use the model year as a starting point, then identify the fitted switch and lamps. Compare the switch mounting and connections separately from the lamp’s sealing profile; changes to one assembly do not establish compatibility for another.

Which relay details matter if the signals have been changed?

The linked flasher is a 6V, 17W, two-prong replacement with explicit 1970–71 CB100K application. It is not LED-compatible. Match the installed lamps, electrical supply and connections; a voltage conversion or LED conversion needs its own relay selection.

What should I send when asking for help choosing a lamp gasket?

Send clear views of the lens, housing and existing gasket, along with any identifying marks. Include the motorcycle model and whether the signals have been replaced, so the sealing arrangement can be compared before ordering.

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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