Mine also doesn't shut off (overdrive always kicks in), im fairly sure this switch has only one wire (grounding process to switch it on/off) i haven't looked at mine yet to verify but it also mite be that the wire i see has something to do with the light n the switch...
But my plan is to dismantle the shifthandle top part to see exactly whats inside and if maybe the switch its self is broken or dirty, i dont know if this switch has a fuse in it or in line so....its a start...
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93 Probe 2L.
76 Cougar 351 M (400CID,6.6L).
1983 29F Pace Arrow (class A motor home) GM chassy, 454 big block.
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