Wayne and All- Over the years Ive had a few brake light switches fail. The
first couple was before silicone brake fluid was common and I always used
Castrol Girling Lima. So its my thoughts the switches are normal Lucas type
parts and even if manufactured by another supplier, having Lucas smoke running
thru the switch has to help it to deterioate.After going to silicone Ive had
one switch go bad BUT Ive always worried that it would fail anytime. With that
in mind Ive always thought about installing a mechanical switch but with
Waynes discovery that their is enough current to close a relay, I think it
gives us another option. Some may prefer to go mechnical but I like the relay
idea. If Wayne would tell us more about the relay, like where it was purchased
and any other information, even draw it up for the clubs newsletters and TU,
it would be a positive for us all as Im sure we are going to run out of spares
in time.
Cheers, TtT
PS- Theo this would be a good place to add your thoughts on a particular relay
etc.
--- On Mon, 10/12/09, Wayne-MSN <w_pierzga@msn.com> wrote:
> From: Wayne-MSN <w_pierzga@msn.com>
> Subject: Re: [Tigers] Brake Switch
> To: "'Richard'" <rcsphx1@cox.net>, "'Tiger List'" <tigers@autox.team.net>
> Date: Monday, October 12, 2009, 1:34 PM
> Rich:
>
> I experienced a similar problem on my MKII using silicon
> fluid. I replaced
> the switch and the problem reoccurred.
>
> After some investigation I found that the switch was indeed
> working but it
> would not pass sufficient current to light the brake
> lights: i.e. it was a
> high-resistance switch. I surmise that the switch is
> affected by silicon
> fluid. My solution was quite simple - I installed a relay
> that is triggered
> by the brake light switch. The relay carries the current
> and the lights work
> fine. I have been using this solution now for going on 6
> years with perfect
> reliability.
>
> Cost of the solution: approx $5. Time to complete: approx
> 30 minutes. I
> located the relay on the horn-hole cover plate I fitted to
> the car to
> resolve overheating problems.
>
> Wayne
>
> -----Original Message-----
> From: Richard [mailto:rcsphx1@cox.net]
> Sent: Monday, October 12, 2009 9:07 AM
> To: Tiger List
> Subject: [Tigers] Brake Switch
>
> I just noticed thar my MKII now required very heavy
> pressure on the pedal to
> turn on the brake lights. I have silicone fluid in
> the system now, would
> changing back to GTLMA, and or, replacing the brake light
> switch solve the
> problem. Or is Ron Fraser's post to change to a
> mechanical switch the way
> to
> go?
>
> Thanks Rich
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