Hi, I've put a new battery (old one was shot), solenoid and ignition switch. I can't get the starter or solenoid to click or engage when I turn the key. If I jump the post on the solenoid it cranks but am lost now. I've checked the wiring and it matches the schematic in my book. What causes the solenoid to engage ( a three wire ) ? The book doesn't show a hot wire to the switch and I don't have any extra wires that aren't hooked up. I have a wire that runs from the switch to the spade connection on the base of the solenoid. The ignition is a 5 spade switch with the kill (brown), green (solenoid), and a jumper that connects 2 spades. I'm sure its something simple but I can't figure it out.