Yes it will be the purple wire on the "S" terminal. If you haven't already, go to Vikki's site and get the wiring diagrams for the 67. BTW, you also may want to check out the 68 for the area around the starter as it is a little clearer. If you are concerned that this is causing your starting problems you can always take a jumper over from the battey while someone is cranking. Don't leave on to long or you could burn up your coil (if you have the original point setup). Are you running points or petronix?