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CB400F Ignition Switch

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Trigger:
There are two types of these, the one you have in the picture is a early one.

thegreatpan:
Thanks, do you mean the barrel or the plastic part.?

Trigger:

--- Quote from: thegreatpan on April 15, 2018, 10:50:25 PM ---Thanks, do you mean the barrel or the plastic part.?

--- End quote ---

Two types of barrels and in the back of my brain, I am sure I tried to fit a later plastic part to a earlier barrel and it never fitted. There are so many different repro ones of these about, that it is hard to match the parts.
Is your original key, with or without a plastic cover ?

thegreatpan:
No original keys were with bike, so I ordered one off the barrel number.

Ever since recommissioning the bike  the switch was intermittent, on inspection the innards had sort of melted,  so I went for the DS unit.

I then I ordered the repair kit. It wasn't a great deal of money,  however I would like to go back to the original item, as genuine Honda keys are still available, as well as the convenience of having just one key for all locks.

thegreatpan:
I have managed to score a couple of the older type ignition switches from Fleabay.

 I have separated the lock bodies from the plastic parts, cleaned up the better looking of the two plastic parts using a soft brush and WD40 on the the exposed conductors and plastic outer body. I have not dismantled the internals for fear of flying springs, ball bearings etc.

Following this I then attached the cleaned up plastic part to my original lock barrel, all seems to work fine with positive key switch type clicks.

I have then tried to ascertain what circuits are working using the shop manual and my multi meter. Please could someone advise me if the following is correct, with the switch off the bike.

Switch Off no continuity on any combination of pins.
Switch on  pins 5 & 6 (Red  and Black) about 2 ohms. No continuity on any other combination.
Switch on park  pins 5 & 4 (Red and Brown) about 2 ohms. No continuity on any other combination.
What should I be getting for the other brown wire combinations? Or does the switch have to be connected up to read those? The spare plastic part gives the same readings. [ Guests cannot view attachments ]

Also is there a knack to accessing the two lock securing bolts, perhaps by taking of the headlight?

Many Thanks
Dave

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