how does a brake switch work has a spring

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Sep 16, 2014 | 07:20 AM

mike L

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From: va

how does a brake switch work has a spring

How does a BOO brake switch work exactly? The switch moves with the pedal. Looks like a spring inside. I did a ohms test on the switch alone while pressing the brake pedal, the needle didn't move. So the switch is bad? Would that cause the fuse 13 to blow when I press the brake pedal?

Sep 16, 2014 | 07:38 AM

David7.3

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From: Oakhust NJ Jersey Shore

Very unlikely, The switch pushes against the brake lever when you install it, thats why there's pressure on it when you replace it, once you hit the brake, the pressure switches to the booster arm causing the switch to close. Yes they are known for failing quite a bit but I never saw one short to ground and blow a fuse. I would disconnect the plug on the switch and jump it with a paper clip and make sure your brake lights work and the fuse doesn't blow, if the fuse blows again there is something in your brakelight circuit that is shorted to ground. Dont for get the brake light circuit goes through the combo switch, "turn signal switch" as well. If your turn signals work or hazards then it's safe to say most of the wiring from the combo switch back is good. Happy Hunting

Sep 16, 2014 | 11:01 AM

mike L

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From: va

jump brake switch blow fuse

Quote:

Originally Posted by David7.3

Very unlikely, The switch pushes against the brake lever when you install it, that's why there's pressure on it when you replace it, once you hit the brake, the pressure switches to the booster arm causing the switch to close. Yes they are known for failing quite a bit but I never saw one short to ground and blow a fuse. I would disconnect the plug on the switch and jump it with a paper clip and make sure your brake lights work and the fuse doesn't blow, if the fuse blows again there is something in your brake light circuit that is shorted to ground. Don't for get the brake light circuit goes through the combo switch, "turn signal switch" as well. If your turn signals work or hazards then it's safe to say most of the wiring from the combo switch back is good. Happy Hunting

I added a paper clip to the brake plug it blow # 13 fuse. So is there a wire that goes to my brake switch that is bare? Does a wire go from main computer to the brake switch to the multi switch on column then to rear brake lights. So how do I find the problem, please make it easy to understand. I just what to know how this works. This happened after I lowered the steering column to the floor, I did forget to unplug the brake plug does that help? To remove the dash.

Sep 16, 2014 | 11:45 AM

subford

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From: Easton,Ks

The BOO Switch wiring:

Sep 16, 2014 | 11:56 AM

subford

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From: Easton,Ks

If you push the hazard switch down does the fuse still blow when you push on the brake?

Sep 16, 2014 | 12:20 PM

mike L

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From: va

now only no brake light

Quote:

Originally Posted by subford

If you push the hazard switch down does the fuse still blow when you push on the brake?

no. NOW everything works except the brake light. When you step on the brake. Weird, I did plugged the brake sensor in.

Sep 16, 2014 | 12:32 PM

subford

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From: Easton,Ks

I do not understand what you are saying. But if you are saying it only blows the fuse with hazard switch up then you have a problem with the Multi-Function switch or what it feeds.