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Hydraulic brake switch

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Has anybody had any issues with hydraulic brake switches suddenly not working? Or should I look elsewhere for the culprit? The tail light still works but no brake light.

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a tester is your friend

 

but try the front and rear brake to see if the bulb illuminates in either situation this can help isolate   and confirm the bulb circuit

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If you have an air bubble in the brake system, it increase the amount of brake pressure required to activate the switch.

 

A jumper wire between the two sides of the switch will tell you if the problem is the switch.

Edited by heart_of_darkness

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If you have an air bubble in the brake system, it increase the amount of brake pressure required to activate the switch.

A jumper wire between the two sides of the switch will tell you if the problem is the switch.

how do I do that? Do I just jump the two wires and press the brake and watch the tester?

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Hydraulic switches seem to have limited life expectancy.  Rockymountainatv has cheap replacements.  You want one for a Japanese thread spec. 

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Hydraulic switches seem to have limited life expectancy. Rockymountainatv has cheap replacements. You want one for a Japanese thread spec.

that's a sweet deal considering I just paid $24 local, bonk! I think I'm gonna order an extra for those long rides next season.

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