Ignition switch wires identification
Don't know if i'll get a reply as i seem a little late to the party. I have a 77 D100, a904 trans with an msd 6al box. Last summer my ignition switch got sloppy and wouldn't start the truck anymore. So i replaced the switch, still doesn't start. The msd box is wired a little different than msd says to, ie_ small red wire from box is wired to a keyed 12v wire as my original pos coil wire (pink) is wired to the elec choke on carb because it originally had man choke and the ground wire for the box is grounded on the frame. Worked fine this way for 11 years. I haven't changed anything only cleaned up the wires and got rid of the wire nuts and old butt connectors. Currently running a momentary button to start it, wire from pos battery to switch then other side of switch to relay. My original signal wire is grounded to the battery as for whatever reason had a small amount of voltage through it while motor was running and when grounded went to zero on the volt meter. I don't know what changed but it's driving me nuts trying to figure it out. Thanks everyone
Don't know if i'll get a reply as i seem a little late to the party. I have a 77 D100, a904 trans with an msd 6al box. Last summer my ignition switch got sloppy and wouldn't start the truck anymore. So i replaced the switch, still doesn't start. The msd box is wired a little different than msd says to, ie_ small red wire from box is wired to a keyed 12v wire as my original pos coil wire (pink) is wired to the elec choke on carb because it originally had man choke and the ground wire for the box is grounded on the frame. Worked fine this way for 11 years. I haven't changed anything only cleaned up the wires and got rid of the wire nuts and old butt connectors. Currently running a momentary button to start it, wire from pos battery to switch then other side of switch to relay. My original signal wire is grounded to the battery as for whatever reason had a small amount of voltage through it while motor was running and when grounded went to zero on the volt meter. I don't know what changed but it's driving me nuts trying to figure it out. Thanks everyone
