To review...78 corolla wagon, well maintained, low mileage. New everything. Every once in a while it won't start. Always starts for me when I boost and get the kids going again. Figured it was the switch. Turns out that if the lights are left on, even for a moment, and we try to start, it won't turn over. Just clicks, like a faulty starter selenoid. Its like a circuit breaker trips and it has to reset before the damn thing will start.
Does this extra clue give anyone an idea as to the cause......