Re: Smoke from ignition switch Help !
Gary, you have an intermittent switch. Inside, there are copper strips on the black bakelite chassis, see the swaged ends of the rivets?
The tumbler turns another chassis holding spring-loaded balls against the contacts strips.
Over time of the balls being dragged over the strips, a path of micro chips is made, and eventually, continuity is made, as in 12 ohms. Any resistance becomes a hot spot.
I asked about continuity on a 67 switch between BAT & IGN during the time the START position is selected. Sixty-eight switches have continuity between BAT & IGN during START(SOL).
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