Bought my Fourth car yesterday! 1947 Oldsmobile series 76 fastback

[init4fun]

Originally Posted by Electronic M

Today I plan to change the brake switch again and hope the second napa sourced switch lasts more than 3 weeks without intermittently sticking on....

Back in the early 1990s I ran into that very problem with my 53 Buick , a new brake light switch wouldn't live long before the contacts had become welded together . The bulbs and sockets were fine , and I suspected the new switches weren't built to the same level of quality as the original was . After switch #3 failed I wired in a 6V relay for switch #4 to control and in the few years I owned the car afterwards there was no further problem of the brake lights being stuck on .

[Electronic M]

Originally Posted by init4fun

Back in the early 1990s I ran into that very problem with my 53 Buick , a new brake light switch wouldn't live long before the contacts had become welded together . The bulbs and sockets were fine , and I suspected the new switches weren't built to the same level of quality as the original was . After switch #3 failed I wired in a 6V relay for switch #4 to control and in the few years I owned the car afterwards there was no further problem of the brake lights being stuck on .

That's a good suggestion. My contacts stick but usually come loose either pumping the pedal or tapping the switch housing with a wrench so I wonder if it's really welding or some mechanical deficiency... I've got 6V relays so it would be fairly trivial to make one into a buffer...the up side is I probably would be able to hear it engage and disengage and notice the problem faster if it isn't mechanical...