Brake switch

[Woodside]

Is there an easy way to test the front brake switch on the 500.
It would be nice to know before I tidy it up and fit and fill the system
Thanks in advance

[Bryanj]

Not easy without pressure only ever known 1 go wrong, and that was under Honda warantee

[Woodside]

Ok
Thing is
I have 3-4 here and all have been off a bike for at least 5 years if not 10+
So god knows what condition they are in.
Perhaps I will sort them all at least one must be ok

[Lobo]

... I guess the most obvious thing to do is to check each one is open circuit before you bother fitting it/them. (Ie if continuity is present in the dry / unpressurised state then it’s probably duff)

[deltarider]

Have you checked p.103 of the Shop Manual Honda CB500-550? https://www.classiccycles.org/media//DIR_1653304/DIR_1653404/DIR_1653507/ecc6759db0a214d5ffff8820ffffe41e.pdf

[Bryanj]

All it sez in that is check continuity with lever pulled which means it has to be fitted and bled, that dont help to OP with which one to fit.
I have read on the US forum about somebody sticking a rod in the hole and pushing but i dont like that idea as it might damage the internals