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1978 Honda CB400TII Hawk II Switches & Sensors

The front and rear brake lights use different switch arrangements on the 1978 Hawk II. Choose the switch for the affected control, and compare it with the master cylinder or rear-brake linkage actually fitted. Previous control changes can matter more than appearance.

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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...
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...
Honda CB400A CB400TII front brake light switch assembly 35340-413-013

1978 Honda CB400A / CB400TII Front Brake Light Switch Assembly ~ Replaces 35340-413-013

$24.95 USD
12-0040
Replace your CB400A or CB400TII front brake stop switch with this Front Brake Stop Switch Assembly, replacing OEM #35340-413-013.Key Features• Front brake stop switch...
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1978 Honda CB400TII Hawk II · Switches & Sensors Buying guide

Choose by control location and switch function

The front stop switch has an explicit 1978 Hawk II application. The rear switch is a separate assembly. Confirm which control fails to operate the light before selecting the corresponding replacement.

Parts to consider

1978 Honda CB400A / CB400TII Front Brake Light Switch Assembly ~ Replaces 35340-413-013 Hawk II front brake light switchFront stop-switch assembly specifically listed for the 1978 CB400TII, replacing reference 35340-413-013. Compare the switch mounting with the master-cylinder assembly fitted to your motorcycle.View part Honda CB Rear Brake Light Switch Rear brake light switchRear stop-light switch for the 1978 Hawk II. Compare the threaded body, operating connection and lead terminals with your existing rear-brake arrangement.View part

Match the front switch to the master cylinder

The front brake stop-switch assembly uses the 35340-413-013 reference and is specifically listed for the 1978 CB400TII. Compare its mounting and terminals with your existing unit. A later master cylinder or an aftermarket conversion may require a different switch even though the motorcycle remains a Hawk II.

Separate a switch fault from a shared circuit fault

If only one brake control fails to illuminate the lamp, inspect that switch and its connections. If neither works, include the shared lamp and wiring in the diagnosis. Use the Type II wiring diagram and service manual for testing rather than buying both switches without checking the circuit.

Common buying questions

Is the front switch correct for a 1978 Hawk II?

Its stated application includes the 1978 CB400TII and reference 35340-413-013. Compare the switch with your fitted master cylinder, since a replacement control assembly can change the required mounting or connection.

What should I compare on the rear brake switch?

Compare the threaded mounting body, the operating connection to the brake mechanism and the lead terminals. Check the existing arrangement before ordering, particularly where the rear-brake linkage or wiring has been altered.

Should I replace both switches if the brake light stays off?

Test the circuit first. A fault affecting both controls may be in the shared lamp or wiring. Checking each switch and its connections helps you order the component actually needed for the repair.

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

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