Quoting RandalPark@xxxxxxx: > to work, or it will fail completely. In any case, engine RPMs should not have > an effect. I suppose that an imperfect connection within the switch could be > strengthened with a brief electrical surge, but that seems a little far > fetched. Paul, the connection to revving the engine may be from the vacuum vreated when you let off the throttle. As the booster is vacuum operated, a temporary increasein vacuum could pull the M/C a bit more. The brake switch of my 68 LeBaron used to not be very well adjusted, right after I replaced it (this is not pressure activated, but pedal activated). I recall, when I revved the engine at idle w/out touching the brakes, the lights would come on. THe reason was the increased vacuum pulled the brake pedal just a hair. I ended up replacing the booster on this car, I do not remember if I replaced it after or before that incident. After I readjusted the switch, the problem was solved. I don't think this fix can be done or on the 60 year model, of course, I just mention it because I think its interesting. D^2