682 seat switch

[ironman]

Originally Posted by Roy Najecki

I'm working through problems why my 682 won't turns over but won't start. One reason may be the ignition switch and connector was a corroded and molten mess. I've got that fixed and am now doing electrical continuity tests. My question is on the seat switch. The wiring diagram says the switch is 'Normally Open' which to my mind means when the tractor is running and used, the seat is down (and switch plunger is down) there is no continuity between the Blue and Violet/White wires. In my case I have continuity when the seat is down and no continuity when the seat is up. Am I misunderstanding what is meant by Normally Open, or perhaps I have the wrong switch?

You are incorrect. The "Normal" in reference, means the condition of the switch contacts when the switch is at rest with no action operating it. So normally open for your seat switch means the tractor is sitting at rest, not running, and no one in the seat. This is what you would want so that the tractor cannot be started with no operator in seat. Your continuity readings are correct.

If I understand you right, you are saying the engine cranks but does not start? That would not be a safety switch problem because the safety switches are to prevent starter operation. Sounds more like ignition, make sure you got the correct ignition switch that you replaced.