I'm at a standstill, my dimmer switch works but I'm missing (from inside the steering column housing the actuator arm that connects the multi-switch to the long metal rod that runs down the steering column that activates the switch when I pull on the lever on the column. I took apart the column, no problem except I am missing the "dimmer switch actuator arm", it sits inside the smaller section of the cover that comes off near the tilt lever. I've searched several parts places and only found a GMC part that looks like what I need, ?will this work? where might I find one? I am still searching. Thanks for the help.