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Brake lights

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Old Jan 26, 2023 | 03:44 PM
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Brake lights
I have gone thru 3 of the pressure switch on the master cylinder. Does anyone have a better alternative than the oe style?
 
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Old Jan 26, 2023 | 04:38 PM
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Are you using something other than DOT3? Have you try a different supplier? I've use the NAPA SL134 and DOT3 without issue.

NAPA SL134
STANDARD MOTOR PRODUCT SLS27
ALLSTAR 76251

 
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Old Jan 26, 2023 | 08:58 PM
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.... or, you could run it into a relay so that then the switch would only have to carry just enough current to trip the relay and the relay would switch the rest of the load.
 
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Old Jan 27, 2023 | 02:57 PM
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Are you by chance using silicone brake fluid?It loves eating up those pressure switches because most of them are not compatible.
 
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Old Jan 29, 2023 | 05:14 AM
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Mine did the same thing. A lot of them do that. I went and got this switch from Summit. Item #rfw-sw68. Don't know why I can't make a link work.
 
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Old Jan 29, 2023 | 07:05 AM
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I got a motorcycle style brake switch to replace the unreliable pressure switch, problem solved.
 
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Old Jan 29, 2023 | 08:09 AM
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Originally Posted by Marten
Mine did the same thing. A lot of them do that. I went and got this switch from Summit. Item #rfw-sw68. Don't know why I can't make a link work.
Ron Francis Wiring SW68 Ron Francis Wiring Lever Brake Switches | Summit Racing
 
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Old Jan 29, 2023 | 08:53 AM
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I used the same one as Effietrucker... went thru 3 pressure switches before I gave up...


 
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Old Jan 29, 2023 | 04:21 PM
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Harley-Davidson brake light switch # 72023-51D (made in the USA) This was 20+ years ago.
 
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Old Jan 29, 2023 | 04:31 PM
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Got a switch from auto zone about 4 years ago still working with silicon brake fluid.
 
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