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1975 Honda CB550F Wiring Harnesses

Replace the wiring section your 1975 Honda CB550F needs with a main loom or junction-panel sub harness. They are separate products with different jobs. Compare the original connections and any modifications before ordering so the replacement matches the components still fitted.

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Honda CB750 CB550 CB400 pilot turn signal light cover 37600-377-018

Honda CB750 / CB550 / CB400 Pilot Turn Signal Light Cover ~ Replaces 37600-377-018

$54.95 USD
99-4819
Restore your gauge cluster with this replacement Pilot Indicator Light Cover — a direct fit for OEM #37600‑377‑018. This part includes both the front...
Honda CB550F CB550K sub wire harness 32105-390-000

1975-78 Honda CB550F / CB550K Sub Wire Harness ~ Replaces 32105-390-000

$29.95 USD
73-0123
Replace your CB550 sub wire harness with this Sub Wire Harness (Junction Panel Harness), the sub harness on the bike that many electrical components...
Honda CB550F wire harness 32100-390-010

1975-77 Honda CB550F Wire Harness ~ Replaces 32100-390-010

$99.95 USD
24-4015
Replace your CB550F Supersport wire harness with this Main Wire Harness Loom, replacing OEM #32100-390-010 / #32100-390-000.Key Features• Main wire harness loom• Replaces OEM...
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1975 Honda CB550F · Wiring Harnesses Buying guide

Choose the main loom or the junction-panel section

A main harness renewal and a junction-panel repair need different products. Identify the damaged wiring section on the CB550F diagram, then compare the existing connectors and any previous electrical alterations.

Parts to consider

1975-77 Honda CB550F Wire Harness ~ Replaces 32100-390-010 CB550F main wiring loomMain loom for the 1975–77 CB550F, replacing references 32100-390-010 and 32100-390-000.View part 1975-78 Honda CB550F / CB550K Sub Wire Harness ~ Replaces 32105-390-000 Junction-panel sub harnessSeparate sub harness connecting components such as the fuse box, starter switch and rectifier; reference 32105-390-000.View part

Identify the section being replaced

The main loom is the model-specific main wire harness. The junction-panel sub harness is a separate wiring section serving electrical components such as the fuse box and rectifier. Use the wiring diagram and the motorcycle’s existing connections to decide which section needs renewal before placing an order.

Allow for changes made over the years

Electronic ignition, a combined regulator or custom lighting may have altered the original wiring. Compare the replacement connections with the installed equipment and keep the relevant conversion instructions available. A stock-application loom does not resolve previous splices or make different aftermarket components connect without further checking.

Buying questions

Which harness should I choose for damaged junction-panel wiring?

The featured sub harness is the junction-panel section connecting components such as the fuse box, starter switch and rectifier. Compare that section with the damaged wiring and diagram; choose the main loom separately when the main wiring runs need renewal.

Does the main loom include new switches and electrical components?

It is a main wiring loom, not a complete electrical-component kit. Retain or choose switches and other components separately, checking their connections against the replacement loom. The junction-panel sub harness is also a separate product.

Can I use the loom after an electronic ignition conversion?

Compare the conversion’s wiring instructions and installed connections with the replacement loom before ordering. The main loom has the CB550F application, but altered wiring or aftermarket connectors still need to be reconciled during installation.

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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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