How do I disconnect the Neutral safety switch on a 1957 skyliner? I need to get it into the shop so I can fix other problems, as well as test the switch. as it is now I put it in neutral and it either doesn't even crank or if it does it's only 3-5 cranks not enough to start. I have tried jiggling the gear shift around the neutral position which has worked in the past but doesn't help now.