there it is ...you should see continuity (.003 ohms) bettwwen the two black and yellow wires on the switch when in the Park position. and infinity (0 ohms) when in Drive

if that is good, reconnect your battery cable (because you always take it off to mess with any wires) and change your meter to check 12v to ground on one of the black and yellow wires when key in start position

1989 5 door montero 3.0 auto
stock original Japanese
about 200k miles