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Re: [TR] TR3A Brake light switch

To: "*Triumphs List" <triumphs@autox.team.net>, "Randall" <TR3driver@ca.rr.com>
Subject: Re: [TR] TR3A Brake light switch
From: "Alex" <ambritts@bellsouth.net>
Date: Sun, 26 Sep 2010 12:25:47 -0400
Thanks Randall,

Last question, and again an assumption on my part. The wire connections on 
the TR3A switch would just be rerouted or extended and simply attached to 
the contacts on the TR6?

Thx again,
Alex
----- Original Message ----- 
From: "Randall" <TR3driver@ca.rr.com>
To: "'*Triumphs List'" <triumphs@autox.team.net>
Sent: Sunday, September 26, 2010 12:03 PM
Subject: Re: [TR] TR3A Brake light switch


>> has anyone replaced these switches with a new one and did
>> the new one work
>> with minimal pressure on the brake pedal as one would expect.
>
> It's been a few years now, but I had exactly the same problem.  The
> replacement switch worked fine for a few months, then gradually started
> taking more and more pressure.  That happened with switches from Moss, 
> TRF,
> and FLAPS.
>
>> 2nd approach would be to bypass this switch with a brake
>> pedal mounted one
>> like my TR6 brake switch.
>
> That is the way I went.  The one I put on the TR3A worked great for 
> several
> years, but oddly enough I'm having trouble with the one on the TR3.
>
> Apparently, silicone brake fluid is the kiss of death for switches.  I use
> DOT 5 of course, and had a leak on the TR3 that allowed it to slowly run
> down the brake pedal.  When I disassembled the nearly new switch, it was 
> wet
> inside with what appeared to be DOT 5, and one of the contacts was covered
> with a hard black substance that did not conduct.  Likely it was burnt 
> brake
> fluid.
>
> FWIW, here's a shot of the new brake switch & the bracket I fabricated, to
> mount it under the dash out of sight.  Just a piece of flat steel bar from
> Home Depot, bent at an angle, and ground/drilled to suit.
> http://tinyurl.com/2efyus7
>
> No doubt you'll want to do a nicer job, but I was in a hurry.  And since 
> it
> is out of sight (unless you have your head in the footwell), it doesn't
> bother me <g>  Maybe someday, after I retire and get bored without enough 
> to
> do, I'll pull it back apart and powder coat everything.
>
> Randall

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