The antenna switch for an FJ60 is listed as a valid part from 1980, so you might have the wiring for it already. The FJ60 switch (84760-90A00) is discontined, but it looks like the FJ62 switch is still available (84760-90A01). I'm not sure it is the same size as the FJ60 switch, though...
My 1985 was pre-wired. But '82 is probably a little early for that. I used the OEM switch. The wiring for that is below. You just need power and ground to the switch and two wires running from the switch to the antenna motor. The polarity is reversed for up vs. down.
Radio's these days...