SOHC.co.uk Forums > CB350/400

Rightside Handlebar Switch 350/500

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watty51:
After doing some research on the topic I decided to buy a cb500 right side Handlebar switch. The wiring for the switch in the Clymer manual looks the same for both the cb350 and the cb500. Having marked up where all the connections from the old switch went , I went ahead and replaced it with a Reproduction Switch from DSS. Code Number 35300323671P.

The switch wires were all the same colours as the original one so plugged in to marked up cables.
Now the problem I have encountered is when the starter is pressed the engine will start with the kill switch in any of the 3 positions IE: off-on-off.

After a couple of nights trying to work it out and having examined the wiring diagrams again I have noticed one difference I missed. The emergency switch on the 350 wiring diagram has the switch arm attached to the KB contact whereas the 500 wiring diagram has the switch arm attached to the kw contact. ( see attachment photos) Will this make a difference to how the wiring should go or could it be possible the actual switch is faulty.

Good Luck

watty51:
Some more pictures

watty51:
Thanks for the reply oddjob.

I will do a check on the switch after work tonight.
Electrics are not my strongest point so what will the multimeter need to be set at.

Im presuming the black lead from the multimeter needs to go to the blk/white lead and the red lead from the multimeter needs to go to the black lead.

If the switch is found to be faulty what are DSS like for returning faulty items bearing in mind that pushing the switch cables
through the handlebars has marked the cable cover.

mike the bike:
Black is positive and black/white is the feed to the coils.  When the switch is on then 12V is supplied to the coils,  when the switch is off, then no 12V to the coils.

If you remove the tank, check the black/white on the coils.  It should be 12V
With the switch off, the 12V should disappear.

Measure the 12V with the red meter lead,  and the black meter lead on the battery negative or touching the engine.

Hope this helps

watty51:
Thought DSS might be a bit "funny" about returns with marks on them, Ive learnt a lesson today and that is "check things work before fixing to bike".

Any how will try the continuity test and if that fails try to fix the "BRAND NEW SWITCH" tonight. I will post some photos later if all fails.

Having read a lot of posts about parts for our bikes seems that quite a lot are substandard.

Thanks for advice

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