This hydraulic switch problem is pretty typical whenever silicone is
being used. The swell factor on rubber is higher for silicone than other
brake fluids and as a result the switch tends to fail very early. If you
want to continue using silicone then try to fit a mechanical switch.
Pretty easy to do in a Spridget, almost impossible in a Morris, don't
know about the A40.
On Wed, 09 Dec 1998 23:50:12 -0500 Frank Clarici <email@example.com>
>I am having a problem with brake light switches on my A40.
>It is a Sprite disc front and Sprite later drum rear.
>Inline hydraulic brake light pressure switch.
>Since February of 98 when the A40 first saw the road I have gone thru
>brake light switches.
>I am using silicone DOT 5 brake fluid and everything else is perfect.
>just keep eating up switches.
>The last 2 were new, the first 2 were working used when installed and
>just assumed they went bad from being old. The last 2 each lasted
>2 months, same as the used ones.
>Anybody else having this problem with silicone?
>Or am I just the lucky one?
>Has anyone adapted a pedal mounted contact switch to a Sprite?
>(pre 68) This is my next quest since I am out of NOS Lucas brake light
>switches and the Asian ones from the suppliers are out of the
>Similarities? Modifications? other ideas?
>Toms River, NJ
>Lots of LBCs