1978 Honda CB750K Electrical Parts

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Honda CB750 Black Horn with Bracket ~ Joker Machine

$59.95 USD

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

$9.50 USD

Universal Motorcycle Spark Plug Cap ~ VB05F is an aftermarket part for the Honda CB applications listed in this product information. Before ordering, confirm...

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

$1,199.00 USD

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

$119.95 USD

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

$229.00 USD

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...

Dynatek 5 ohm ignition coil set 2 Honda CB

Dynatek Performance 5 Ohm Ignition Coil Set/2

$329.00 USD

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

$129.95 USD

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)

$3.50 USD

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...

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

$49.95 USD

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

$749.00 USD

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

$799.00 USD

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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1978 Honda CB750K · Electrical Buying guide

Plan the electrical repair by assembly, not by appearance

The 1978 main harness has its own Honda replacement reference. The ignition switch and fuse box describe different contents. Use those distinctions to build an order around the equipment actually installed on the motorcycle.

Parts to consider

1978 Honda CB750K Wire Harness ~ Replaces 32100-405-611

1978 CB750K main loomMain wiring harness listed specifically for the 1978 CB750K, replacing Honda 32100-405-611. Compare the loom and connectors already fitted.View part

Honda CB Ignition Switch ~ Replaces 35010-377-007

Ignition switch with fork lock and keysReplacement ignition switch listing includes the fork lock and keys, with Honda 35010-377-007 among the stated replacement references.View part

1973-78 Honda CB750F / CB750K / CB550K Fuse Box Assembly ~ Replaces 32110-341-702

Fuse box with spare fusesComplete fuse box assembly replacing Honda 32110-341-702, listed for the 1978 CB750K and supplied with three extra fuses.View part

Start with the correct loom reference

The main harness description specifies the 1978 CB750K and Honda 32100-405-611. It warns that other CB750 years and types use different references. Compare the branches and connections on your motorcycle before ordering; a familiar SOHC model name does not by itself identify the correct main loom.

Separate key-switch repair from ignition service

This range includes a key-operated ignition switch, its base repair pieces, and the coils, plugs and points used elsewhere in the ignition system. Identify which component needs attention. A key-switch repair kit is not a coil or contact-point service kit, and each listing has its own included-parts information.

Common questions

What makes the main loom specific to this motorcycle?

The main harness is listed for the 1978 CB750K and identifies Honda 32100-405-611. Its description cautions that other CB750 model years and types use different main-harness references, so compare the installed loom before choosing.

Does the ignition switch listing include keys?

Yes. The selected ignition-switch description lists keys and a fork lock with the switch. The base repair kit and separate base cover are different products; check their contents when deciding what needs replacement.

Can I treat a fuse box and a main harness as one purchase?

They are separate listings with different replacement references. The fuse assembly specifies three extra fuses, while the main loom is described as a wiring harness. Do not transfer one product’s included contents to the other.

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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