It's the switch. The inferior switches from the East fail. The US ones don't.
Also, used or old vacuum brake boosters with organic rubber have failed.
Not a problem with tr's, but just FYI.
Sent from my Verizon Wireless Phone
----- Reply message -----
From: "Bob Labuz" <yellowtr@adelphia.net>
To: <triumphs@autox.team.net>
Subject: [TR] Changing from DOT 3 to DOT 5 Fluif
Date: Tue, May 7, 2013 10:41
All,
I use DOT 3 in the 3 and DOT 5 in the 4 and they both have their original brake
light switches. I have had the 3 for over 30 years and the 4 is in its 6th
season with the DOT 5.
Maybe it is the replacement switches that are the problem?
Bob
On 05/07/2013 11:21 AM, TeriAnn J. Wakeman wrote:
> On 5/7/13 8:07 AM, Frank Fisher wrote:
>> i use DOT5 in my TR3 and have done for about 4 years now.
>> the only thing i
>> find problematic is my hydraulic brake switch.
>> they only last 6 to 9 months.
>> i
>> have tried them from roadster factory and moss with the same short >> lived
>> life.
>> i can only assume its the DOT5 that eats the rubber, but i have no >> proof
>> of
>> that.
>>
> The brake light switch failure rate is way too high. I loose one as > often
> as you do and have been using DOT5 for about 25 years now (Gee > that
> long??). I replaced one just yesterday. I keep a spare and a > 7/8th
> wrench in the boot.
>
> I always thought it failed from the heat as my brake light switch is >
> mounted about 2 inches from the exhaust down pipe. Next time the > engine
> comes out I intend to relocate the brake light switch towards > the front of
> the engine bay away from the exhaust system.
>
> TeriAnn
>
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