The brake light switches are on the master cylinder and only turn on the
light when they see pressure.  If you pump the pedal a lot with the engine
off, the vacuum booster will stop working, making it harder to build up
the pressure that turns the lights on.

I've thought of putting an additional switch on the pedal, in parallel
with the stock switches.  The main reason I would want that is so that it
is easier to disengage the cruise control.  Now I have to really push the
brake pedal until the brakes actually start slowing the van down before
the CC disengages.

Edward

> Many thanks to those who helped me out with my radiator fan question. I'm
> now on to the next project in a row. I just installed a third brake light,
> and in the process of doing the wiring had to press the brake pedal to the
> floor many times. I noticed that the brake lights are not coming on until
> the pedal is fully depressed, which is not a very good thing, and invites
> a rear end collision.
>
> I looked around at the floor level behind the pedal and did not see any
> switch. I also checked the brake section in the Bentley, but did not see
> any mention of a brake switch. Perhaps I'm looking in the wrong place, and
> should be looking in the electrical section? Anyway, how does one adjust
> the switch, so that the brake lights come on sooner? And two, where the
> heck is the switch?
>
>
> Thx,
>
> Troy
> 89 Westy
>