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1977 Honda CB750K Electrical Parts

A 1977 CB750K wiring repair calls for the correct late-model components, especially the main loom and handlebar controls. Browse circuit parts, lighting and ignition equipment here, then check the year application and connections against what is actually fitted to your motorcycle.

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Honda CB750 CB650 CB550 SL350K2 Honda headlight stay rubber cushion 61315-340-000

Honda CB750 / CB650 / CB550 / SL350K2 Genuine Honda 61315-340-000 Headlight Stay Rubber Cushion

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This genuine Honda headlight stay rubber cushion fits the upper headlight and fork ear mounting area on select classic Honda CB and SL models....
Honda CB750 black horn with bracket joker machine

Honda CB750 Black Horn with Bracket ~ Joker Machine

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Add a billet horn with this Joker Machine Brand Small Custom Black Horn with CNC-machined bracket and 2 gold mounting screws. This horn relocates...
Universal motorcycle spark plug cap VB05F

Universal Motorcycle Spark Plug Cap ~ VB05F

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Universal Motorcycle Spark Plug Cap ~ VB05F is an aftermarket part for the Honda CB applications listed in this product information. Before ordering, confirm...
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Honda CB750 SOHC CB500 CB550 dynatek dyna 2000 ultimate kit

Honda CB750 SOHC / CB500 / CB550 Dynatek Dyna 2000 Ultimate Kit

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Take the top-tier Dyna 2000 upgrade path on your SOHC CB750 or CB500/CB550 with this Dyna 2000 Digital Performance CDI Ignition Ultimate Kit. Includes...
Honda CB1100 CB900 CB750 performance high output 3.3 ohm coil

Honda CB1100 / CB900 / CB750 Performance High Output 3.3 Ohm Coil

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Upgrade your CB750 or big-bore DOHC CB with this Performance Dual Output Ignition Coil, a 3.3 Ohm dual-tower type with hardware. Replaces stock factory...
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Honda CB500K CB550 CB750 SOHC electronic ignition kit with trigger plate, wiring harness and aluminum rotor

Electronic Ignition Kit ~ Honda CB500K / CB550 / CB750 SOHC

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Replace mechanical points and condensers with this aftermarket electronic ignition for the listed Honda SOHC four-cylinder models. Keep the original mechanical spark advancer and...
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Dynatek Performance 5 Ohm Ignition Coil Set/2

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Step up to genuine Dynatek performance coils with this Dynatek Performance Dual-Output 5 Ohm Ignition Coil Set of 2. Produces spark voltages exceeding 30,000...
Honda CB750 CB900 CB1100 performance 5.2 ohm ignition coil

Honda CB Performance 5.2 Ohm Dual-Output Ignition Coil

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Step up your ignition with this Performance High Output 5.2 Ohm Dual-Output Ignition Coil. Primary resistance of 5.2 Ohm, secondary of 17K Ohm, designed...
Honda CB1100 CB900 CB750 coil high tension wire ends (pk 2)

Honda CB1100 / CB900 / CB750 Coil High Tension Wire Ends (Pk/2)

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Replace the high-tension wire ends that fit inside your coil towers with this 2-pack of Coil High-Tension Lead Ends. Same fitment as our tower...
Honda CB750 ignition coil 30400-306-672

1969-78 Honda CB750 Ignition Coil ~ Replaces 30400-306-672

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Replace your CB175/CL175 or CB200/CL200 ignition coil with this Ignition Coil, replacing OEM #30400-306-672. 100mm center-to-center mounting points.Key Features• Ignition coil• Replaces OEM #30400-306-672•...
Honda CB750 SOHC CB500 CB550 dynatek dyna 2000 ignition system

Honda CB750 SOHC / CB500 / CB550 Dynatek Dyna 2000 Ignition System

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Get just the ignition module for your SOHC CB750 or CB500/CB550 with this Dyna 2000 Digital Performance CDI Ignition. The base unit for riders...
Honda CB750 SOHC CB500 CB550 dynatek dyna 2000 premium kit

Honda CB750 SOHC / CB500 / CB550 Dynatek Dyna 2000 Premium Kit

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Hit the middle Dyna 2000 tier on your SOHC CB750 or CB500/CB550 with this Dyna 2000 Digital Performance CDI Ignition Premium Kit. Includes the...
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1977 Honda CB750K · Electrical Buying guide

Choose the late-model component your repair needs

The 1977 main loom, late fuse box and right-hand control offer three different starting points. Identify the damaged assembly first, then check which small wires, seals or mounting pieces can be reused.

Parts to consider

1977 Honda CB750K Wire Harness ~ Replaces 32100-405-670 1977 CB750K main loomYear-specific main wiring harness, listed for the 1977 CB750K and reference 32100-405-670.View part 1973-78 Honda CB750F / CB750K / CB550K Fuse Box Assembly ~ Replaces 32110-341-702 Late CB750K fuse boxComplete fuse box listed for 1973–78 CB750K models; three additional fuses are supplied.View part Honda CB750 / CB550 / CB400 Bar Switch Assembly ~ Right (Brake) Side ~ Replaces 35130-404-671 1977–78 right-hand controlBlack brake-side switch assembly for the late CB750K; its wiring runs outside the handlebar.View part

Related parts: 1977–78 left-hand control · Positive battery cable with end covers · Right-side contact point for cylinders 2 and 3

Keep the repair focused on its circuit

A main harness, fuse box and handlebar switch do different jobs. Diagnose the affected circuit with the appropriate service manual before replacing an assembly. Compare connectors and existing components so a local fault does not lead to an unnecessary order for an entire loom.

Check changes made by previous owners

Electronic ignitions, custom headlights and relocated horns may need different connections or mounts from stock equipment. Read the individual application and installation requirements. A component appearing in this electrical selection does not establish compatibility with every modification already fitted to a 1977 motorcycle.

Questions about electrical

Is the main wiring harness shared with every SOHC CB750?

The main loom shown here is specifically listed for the 1977 CB750K. Its description warns that other years and types use different references. Confirm the motorcycle’s model and the loom application before choosing a replacement.

Do both handlebar switches route their wires the same way?

No. The listed 1977–78 right-hand assembly routes wiring outside the handlebar. The matching-year left-hand assembly requires internal wire routing and has a locator pin. Check each side against your handlebars rather than treating them as an identical installation.

Should I replace every electrical part while restoring the bike?

Build the order around diagnosed faults and damaged components. Some listings supply complete assemblies; others are individual wires, contact points or mounting pieces. Check what your chosen assembly includes before buying additional parts that may already be supplied.

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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