I'm not sure but...I replaced my ignition switch with an original, the previous owner had some aftermarket switch. The new one doesnt have an acc, you can turn to the left but it reverts to off when you let go. Question: does it reset anything when it's turned to the left?. I say this because as some of you know, I had trouble with my aux. hyd.. When I thought I had it fixed it started acting up again. I would crank her up and go through the aux. push button process a number of times, anyway. The last time I was fooling with the aux. hyd. I turned the switch to the left, held it for a moment and since then the aux. hyd. have worked perfectly. I don't know?.