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When I got my '73 F100, there wasn't a key available for the truck. I couldn't remove the lock cylinder since it has to be put in the accessory position, so I just bought another ignition switch (with lock cylinder in it) from a mid-70's truck.
The new ignition switch I have has a different wiring pattern on the back - but the terminals are labelled: ACC, P1, ST, BAT, P2, I1. The old ignition switch also had 6 terminals. Does anyone have a diagram so I can put blade-type terminals on my wires to connect them to the new switch?