it WAS a factory pin switch John , the one with 2 BLUE wires w/ WHITE tracer stripes and bullet connectors on the ends
i do not know if was factory mounting bracket or a very very clever SKUNK-WORKS'd one ?
i have never seen that set up on another land cruiser ever , so finding this...
i have seen a way that a manual linkage 3speed T-CASE had a 4wd green dash light indicator switch involoved , there IS a mud thread on the topic , it was a factory switch too