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Brake Light Switch Leak
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lsilverman11
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Joined: July 09, 2020
Posts: 45
Location: MA
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PostPosted: Sat Aug 27, 2022 7:25 pm    Post subject: Brake Light Switch Leak Reply with quote

Hello. This may be a stupid question, but I'm wondering if there is supposed to be some kind of gasket where the brake light switch screws into the master cylinder. I replaced the master cylinder but kept the old brake light switch. I'm getting a leak there now. If it doesn't need a gasket, why else would it be leaking? Thanks.
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aeromech
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Joined: January 24, 2006
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Location: San Diego, California
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PostPosted: Sat Aug 27, 2022 7:38 pm    Post subject: Re: Brake Light Switch Leak Reply with quote

I use a locktite sealant or teflon tape
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kreemoweet
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PostPosted: Sat Aug 27, 2022 9:53 pm    Post subject: Re: Brake Light Switch Leak Reply with quote

Those switches can leak internally and then past the electrical terminals or body seal. The threads are tapered (on the switch, not the m/c) and usually seal up just like pipe threads.
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