On the original factory supplied YJ-69 ignition modules used on the Bolens 1455, 1476 and 1477, the white wire was not there at all. The factory replacement YJ-69 modules came with the white wire so that it could be connected to a separate on/off kill switch, which was recommended by Wisconsin, to prevent any back feed or pulse from the original ignition switch to the module which could potentially short it out.
Your options here would be to isolate the white wire and not use it at all, relying only on the tractor ignition switch to kill the engine (black wire from Y terminal on ignition switch to - side of coil). This option is usually ok, as long as your ignition switch is in excellent working condition (or new) and all wiring is clean and tight.
Or, add a secondary kill switch. White wire to one side, other side to ground.
Thanks much. That explains why I have two different wiring diagrams. The ignition module on my tractor has been replaced once already. Thus the "extra" white wire. My ignition switch is new as is part of the wiring. What I did use from original was good wire, flexible, no breaks and the terminals were cleaned prior to connection. Going to go with isolating the extra white wire. Now to figure out why I have no spark.
Edited by chieffan, October 27, 2015 - 04:51 PM.