It is easy to do.It is just an end switch that is depressed by the shifter arm itself.Take the 4 phillips head screws loose at that bolts the shifter assembly to the dash and pull out your throttles.You have to then remove the bolts that bolt through the shifter.After you remove the bolts your controls will split apart,just be careful when separating because there is a ball bearing inside that can fall out.This should be greased and stick when removed but sometimes falls out.the safety switch will have two wires going to it.It will be black or red with a metal arm that depresses it.Your problem could just be in the adjustment shifter cable, but if you wanted to just replace the switch for good insurance it insn't hard to do.If you have a teleflex morse control the part number is CA27090P and they are around $20.Yours look just like the ones that I had and I believe the kiekhafer Zero efforts use the same switch also.