List,
I too had trouble with the stock brake light switch using dot 5 fluids. I
wired in (parallel) a switch that I bought at Pep Boys. The number SLS-66
and there is one on E-Bay now (#270460642779) that you can see what it looks
like and even order if you like. Apparently it's a GM part as it fits
Corvetts,Buicks,Novas, etc. I just made a simple L bracket that I screwed to
the "box" that is just above the brake pedal arm, almost in line with the
rod that goes to the cylinder. It's been in there for 9 years now without
any problems.
Wiring the switch in parallel means you don't have to do anything to the
original wiring, i.e. leaving the original switch and wiring in place as
original.
Jerry Christopherson
9473187
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of Ron Fraser
Sent: Monday, October 12, 2009 9:04 AM
To: 'Richard'; 'Tiger List'
Subject: Re: [Tigers] Brake Switch
Rich
For some reason the brake light switch does not like silicone fluid;
this problem of brake switch failure with silicone fluid has come up several
times here. You would have to purge the system of silicone fluid and
change the brake switch to restore the system.
I went to a mechanical switch mostly because I installed cruise
control. The original brake switch did not react quickly enough for me with
cruise control. I also looked at this as a safety issue and I wanted my
brake lights to come on anytime I touched the brake pedal. I did not want
to be slowly rolling to a stop with light brake pedal and NO brake lights
which is possible with just the original brake switch.
I currently have a 1991 Ford Escort brake switch in my Tiger; I'm
sure there are other switch that will work too. You have to make a bracket
to hold the switch and I had to take the Escort switch apart to reduce it's
internal spring force which involved removing the heavier spring force of
the 2 springs inside the switch. I also epoxyed a 1/2" diameter piece of
heavy plastic to the brake pedal to give the switch a pad to work against.
Wire the switch in parallel with the original switch.
Ron Fraser
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of Richard
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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