Re: Looking for photo of a stop light switch installed in a 31.
This is the diagram from Service Bulletins. Switch mounts to frame center cross member. Look for 3 holes in line with the brake pedal. 2 of these holes will match the hole pattern on the switch, and center hole is for the plunger to protrude through. The brake pedal to cross shaft has a round flat foot on the end which the switch plunger bumps up against. When the brake pedal is depressed, the plunger can move forward and circuit is closed.
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