Sanwa, back then, produced really good gear, but they also wanted to be "individual". They did that by having their plugs the same spacing as everybody else, but with the pins wired differently. OK as long as it was all Sanwa gear, but a PITA if mixed with other makes. And no, after all the past time, I can't remember which wires were what, only that where everybody else had something like black, red and white, Sanwa had all black with one of the wires carrying a grey stripe. Or something like that.