Starter switch

[gary123]

Im fitting a switch like this, only its an old genuine Honda one. Where does it get the earth from for the starter ?
There is a blob of solder on top of the switch inside which activates the solenoid when earthed but it doesn't touch the handlebars, should it or am I on the wrong track altogether? [ Guests cannot view attachments ]

[Johnwebley]

All the switch does is operate the solenoid/relay


The heavy current is carried by power lead to the relay,and then the starter.



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[gary123]

Yes I understand that, my issue is the circuit diagram shows the switch creates a circuit by connecting the yellow/red wire to earth, but I dont have an earth conection.

[Arch stanton]

The starter button simply connects the yellow/red wire to the switch cluster body. Therefore making earthing it to the handlebars.

[gary123]

So it earths through the body of the switch. Mine doesn't so Im thinking something is missing from the inside.
Does anyone know what contacts the neg side of the push button to the body or the handlebars. If I use a wire to make the jump it all works ok.

[Nurse Julie]

If I'm thinking correctly, I think there should be a pin/dowel in the bottom half of the switch case that fits in a hole in the handlebar. It depends which type of switch gear you have though.

[gary123]

If I'm thinking correctly, I think there should be a pin/dowel in the bottom half of the switch case that fits in a hole in the handlebar. It depends which type of switch gear you have though.

OK, Thanks Ill check that out in the morning.

[Bryanj]

Look inside the switch and tell me how many wires go to the starter button, there are two type of switch which work differently

[gary123]

Two wires, black and red/yellow.
All the wiring diagrams show an earth which is what I confused by.

[Trigger]

Look inside the switch and tell me how many wires go to the starter button, there are two type of switch which work differently

Good call Bryan. If you have two wires they should be a black live feed and a yellow / red out. The Black live feed may also come from a connection from the left switch 

[Trigger]

Two wires, black and red/yellow.
All the wiring diagrams show an earth which is what I confused by.

Earth is for the earlier switch which is your handle bars

[Trigger]

Your switch maybe for a 550 if it has two wires to the start button >>> http://manuals.sohc4.net/cb550/technical_reference/WD550C.jpg


You can see the differences here >>> http://manuals.sohc4.net/cb500/service_manual/HSM500550_11.pdf

[gary123]

I think your right, Ill see if I can find another switch. Got a few in the junk pile
If not Ill improvise.

[Trigger]

I think your right, Ill see if I can find another switch. Got a few in the junk pile
If not Ill improvise.

You can Improvise, it is just a bit of sodding about with the wiring 

[Trigger]

Look in your stash for one that has the kill switch like this >>> https://www.cb-four.com/cgi-bin/shop/__Switch-Starter-right-Honda-CB750K1-K2-new__18-465-17_07.05.html