Check to see if the resistance wire has power in both the crank and run position. If it doesn't you would have to correct that or the ignition system won't work in the crank position. Next check your ignition system, points and only some aftermarket coils require a resistance feed. HEI's and most aftermarket ignition systems require full voltage. If yours requires a resistance feed, you may have hard starting or no start since battery voltage is pulled down from the draw on the starter and the resistance wire drops it even farther. Thats what the yellow wire was originally for, to send full voltage to the ignition system during cranking. Since you have a mini starter, and most don't have the "R" terminal for the yellow wire, you would need to use a relay, or a diode off the "S" terminal. You really only need the yellow wire if the resistance wire is not hot during cranking, and your ignition system requires a resistance feed.spideynut said:Also Im running a mini starter do I even need this yellow wire?