Butch, The Snap-On model I have is one I got back in the 60's - Snap-On refers to it as a 6" Straight Blade Screw Driver. Proper usage dictates delicately wedging it between the large terminal on the starter relay and the middle terminal (one with the small screw holding the connector) until the starter cranks amid a shower of sparks. After roasting the ends of all my screwdrivers, I eventually bought one from Cornwall or somebody like that... It had a red lead that went to the large terminal on the relay, and a black one that went to the middle terminal. Cool part was that it also had a toggle switch in the bottom that electrically connected the red wire to third green wire, that was connected to the positive terminal of the coil. I called it my "portable key", as I could start a car in the lot and run it inside even if I didn't have the key. Locking steering columns religated the rig to "bump switch" status. Looking back now that I know better, hooking the black and red wires as described above caused the bump switch to carry the load of the solenoid - it would probably be more proper to connect the black wire (as described above) to the terminal opposite the neutral start switch. This would have the added benefits of A) not carrying the solenoid load across the switch, and B) potentially prevent you from running over yourself if the car is not in Park or Neutral. In addition, running the hot jumper directly to the coil would have made short work of the points if driven for long. That wire (green) should have been hooked to the supply side of the ballast resistor. Back in the day it wasn't uncommon to see a bump switch mounted on the firewall (great for lashing valves), and one buddy of mine even had an oil pressure gauge underhood. Same with volt meters in the trunk to monitor the trunk-mounted battery. SC -----Original Message----- From: Butch Edison [mailto:waedison@xxxxxxxxxxx] Sent: Monday, June 28, 2010 1:52 PM To: 1962to1965mopars@xxxxxxxxxx Subject: Engine bump switch I'd like to make what we used to call a 'bump switch' to rotate the engine, but forget where the leads go. If this link is usable , it will take you to the Snap-On site where they have a picture. If not, once you get to their site just type "remote" into the search box and pick "remote starter solenoid switch". Thanks/ Butch/ Ferndale , WA http ://buy1. snapon .com/catalog/item.asp?P65=&tool=all&item_ID=11306&group_ID=1476&store= snapon -store& dir =catalog [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.