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1973 Honda CB500K Looms & Electrical Branch Assemblies

Trace the damaged wiring section on your 1973 Honda CB500K before choosing a harness. The main loom, model-specific sub-harness, pilot-lamp assembly and front stop-switch branch are different purchases. Match the appropriate Honda reference and connections rather than ordering a main loom for every local wiring problem.

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Honda CB750K CB550K CB500K pilot lamp turn signal panel dash harness 37581-323-000

1971-76 Honda CB750K / CB550K / CB500K Pilot Lamp Turn Signal Panel Dash Harness ~ Replaces 37581-323-000

$44.95 USD
11-2181
Restore your instrument panel's indicator lights with this Pilot Lamp Indicator Panel Dash Harness, replacing OEM #37581-323-000 / #37581-374-670. Comes complete with bulbs.Key Features•...
Honda CB550 CB500 front brake light switch sub harness 35345-319-000

Honda CB Front Brake Light Switch Sub Harness ~ Replaces 35345-319-000

$7.00 USD
73-0104
Replace your front stop switch sub harness with this Front Stop / Brake Switch Sub Harness, replacing OEM #35345-319-000.Key Features• Front stop / brake...
Honda CB500K wire harness 32100-323-040

1972-73 Honda CB500K Wire Harness ~ Replaces 32100-323-040

$89.95 USD
73-0931
Replace your CB500K main wire harness with this Main Wire Harness Loom, OEM #32100-323-040.Note: this fits the model years and types listed; other years...
Honda CB500K sub wire harness 32105-323-030

1972-73 Honda CB500K Sub Wire Harness ~ Replaces Honda OEM 32105-323-030

$34.95 USD
24-6029
Replace brittle, cracked, corroded, or modified sub wiring on your Honda CB500K with this aftermarket sub wire harness made to replace Honda OEM 32105-323-030....
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1973 Honda CB500K · Wiring Harnesses Buying guide

Choose the wiring assembly that contains the damaged branch

The main loom references 32100-323-040 and the separate model-specific sub-harness 32105-323-030. The dash harness includes bulbs. The front stop-switch branch is wiring only, without its switch; these differences help identify the correct extent of repair.

Parts to consider

1972-73 Honda CB500K Wire Harness ~ Replaces 32100-323-040 Main electrical loomReferences Honda 32100-323-040 for the 1972–73 CB500K. Connected components and separate sub-harnesses are excluded from the supplied main loom.View part 1972-73 Honda CB500K Sub Wire Harness ~ Replaces Honda OEM 32105-323-030 Model-specific electrical sub-harnessOne aftermarket assembly references Honda 32105-323-030. Its stated application includes the 1973 CB500K2; the complete main loom is not included.View part 1971-76 Honda CB750K / CB550K / CB500K Pilot Lamp Turn Signal Panel Dash Harness ~ Replaces 37581-323-000 Pilot-lamp wiring with bulbsThe dash indicator harness is supplied complete with bulbs. References Honda 37581-323-000 and 37581-374-670; compare sockets and connections with the existing panel.View part

Related parts: Front brake-light switch wiring branch

Identify a local branch before committing to a whole loom

A small harness can address a defined wiring repair without supplying the motorcycle’s complete loom. Compare the current branch with its listed reference, terminals and route. The model-specific sub-harness explicitly includes the 1973 K2 application, but that description does not turn it into the separate main harness.

Check what arrives with each smaller assembly

The dash harness supplies bulbs, while the stop-switch branch supplies no switch. Those package differences matter when a connected component is missing or damaged. Inspect the panel bulbs and brake-light switch independently, then decide whether the wiring assembly alone is enough for the repair.

Wiring Harnesses FAQs

Which references distinguish the main harness and model-specific branch assembly?

Honda 32100-323-040 identifies the main loom; 32105-323-030 identifies the separate sub-harness listed for the 1973 CB500K2. Compare the damaged assembly’s terminal ends, connectors and routing before choosing between a main wiring replacement and the smaller assembly.

Which assembly should I compare for instrument-panel indicator wiring?

The pilot-lamp harness references Honda 37581-323-000 and 37581-374-670 and comes complete with bulbs. Compare its sockets and connections with the fitted panel. It addresses that local wiring assembly, while the main loom and stop-switch branch are separate choices.

What if a previous repair changed the sub-harness connectors?

The sub-harness listing calls for comparing connectors, colours, terminal ends and routing on rewired or mixed-year motorcycles. Establish whether the replacement matches the fitted assembly before ordering; its correct 1973 model application alone does not settle altered connector compatibility.

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