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1972 Honda CB500K Horn & Control Button Choices

If the horn on your 1972 Honda CB500K fails, separate the control button from the sound-producing unit before ordering. The catalog offers a small button with spring and a chrome universal horn. Check the wiring and the installed control as part of identifying the repair.

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Honda CB750 CB500 CB350 horn button

Honda CB750 / CB500 / CB350 Horn Button

$7.00 USD
12-0036
Replace a worn horn button with this Horn Button with Spring. Works as a horn button or a starter button, fitting all SOHC CB750s,...
New
Universal motorcycle horn similar to stock style 12 volt

Universal Motorcycle Horn ~ Similar to Stock Style ~ 12 Volt

$34.95 USD
99-4994
Upgrade or restore your motorcycle’s horn system with this 12 Volt Chrome Horn — designed to deliver a clear, loud 103 dB signal at 3 amps. While...
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1972 Honda CB500K · Horns & Buttons Buying guide

Identify a control repair or a replacement horn

The replacement button fits within a compatible Honda control; it is not a complete switch assembly. The universal horn is a separate 12-volt component with mounting and electrical checks. Its similar stock appearance does not guarantee an unchanged installation.

Parts to consider

Honda CB750 / CB500 / CB350 Horn Button Replacement control button and springOne button and spring can serve a compatible horn or starter-button position. The switch housing and wiring are not included.View part Universal Motorcycle Horn ~ Similar to Stock Style ~ 12 Volt Chrome universal 12-volt hornA 3-amp horn with stock-like appearance. It is not an exact Honda replica; compare mounting and wiring before deciding whether adaptation is needed.View part

Determine whether the button or horn is the failed part

A button-only purchase renews small components inside a compatible control, while the horn listing supplies the sound unit. Inspect the fitted control and test the relevant wiring and connections before ordering. Damage to the switch housing or loom is not repaired by replacing just the button and spring.

Check the universal horn as a separate fitted component

Compare bracket position, body clearance and terminal arrangement with the motorcycle. The horn’s stock-like chrome appearance is a styling description, not proof of identical mounting. Confirm its electrical requirements and the equipment instructions rather than assuming a listed CB500K application makes every existing connection suitable.

Horns & Buttons FAQs

How should I choose the small button for a horn or starter repair?

The supplied button and spring can serve either position in a compatible Honda switch assembly. Match the existing button and control layout before buying, especially with aftermarket controls. The listed motorcycle application does not identify every replacement housing’s internal parts.

Is the universal horn described as identical to Honda’s original?

It is described as similar to stock style rather than an exact replica. Check the bracket, terminals and body clearance. Mounting or wiring changes may be needed, so use the actual fitted arrangement when assessing compatibility.

What electrical specification is given for the horn?

The current listing states 12 volts and 3 amps. Confirm that requirement against the horn circuit and installation instructions. The control button is a separately supplied item and does not establish the capacity or condition of the wiring.

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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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