I am stumped. I need to replace the turn signal on my 68 FJ40 and bought the switch assembly. I have pulled the steering wheel but I can't figure out how to get the top turn signal switch collar off of the steering column. My FJ is a three speed column shift and the shift rod is threaded into the back of the top turn signal switch collar. How do I disconnect the shift rod from the top turn signal collar so I can remove? The new turn signal switch collar is not threaded for the shift rod like the original collar. Can someone give me directions to remove the old switch and install the new one? Do I need to thread the new top signal switch collar?Thanks!