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Discussion Starter #1
I know that in order to start my 2007 660 rhino while in gear I have to press the brake pedal. But it’s not actually that. It’s the brake lights coming on.

sometimes when I press the brake pedal the rear brake lights won’t cut on. Then a minute later - miraculously - they do. They will every time for a month and then randomly - same thing. No brake light. No starting in gear.

and I know - it’s not that hard to just shift to neutral but I’ve got a machine that I’m pretty proud of - I want it to operate as intended.

I adjusted the set point where the light comes on because I thought that might be the issue. It didn’t seem to effect it.

what is my next step? Replacing that sensor switch? Is that even the mechanism that is sending power to the brake lights which then allow me to start in gear?

sorry for the long post. Any help or thoughts would be appreciated.
 

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Sorta sounds as if the brake light switch has sticky contacts - sometimes makes connection sometimes does not. I think at this point I would just try replacing the switch. Of course also you would want to ensure that there are no loose connections and/or bad grounds.
 

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Discussion Starter #3
Anyone know the part number for the switch? Yamaha dealer said it’s $125. Seems fishy. I will use a dealer but I want to make sure I’m not being ripped off.
 

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Looking at the wiring diagram, the brake light switch also feeds to the starter relay, so if the brake lights come on, the starter relay should work at the same time. Between the switch and the relay is a diode assembly, its purpose is to prevent a backfeed between circuits. My guess is the switch is acting up or a wire connection is poor, since the brake lights don't work consistently. An online Yamaha parts seller lists the switch at about $36 and the diode assembly at about $9
 
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