I had problems with mine, I had to take apart the switch and clean the contacts.... (Inside of the switch itself)

Does it work with the Key??? or are both the same...

Found this little bit of info which may help all 1st Gen Runner guys... While bobbing buddies runner, on drivers side the bolt hole by the roll bar (bar closest to gate) there is a button in the hole, that the bolt makes contact with (depresses) - safety switch... Make sure you have you bolt in that hole. Mine works with out (84 - might be stuck in - depressed)...

Also may want to check relay (just behind drivers seat) I had it get wet and needed a good drying out before it worked.