RJ Hamner 1,012 #1 Posted September 1, 2016 About 99% of the wiring was gone on my C-121 when I bought it. Most of the interlocks switches were still there but the wiring is gone. I have the wiring diagram. My problem is with the PTO Interlock. The simple diagram shows three wires, I pole from Ignition switch,wire from seat switch and S pole from ignition switch on one side. On the other side, wire back to seat switch, wire to the coil and wire to the pedal interlock. Looks pretty straight forward in the diagram. Got the new switch out of the package.........now I am stumped. Its not looking so "straight forward" any more Which one is which???? Did I mention automotive wiring is NOT my strong suit I would really appreciate some help/advice 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,147 #2 Posted September 1, 2016 Looking at your photo The red wires go to the 2 terminals farthest apart at the top for the starter circuit There are 2 black wires going to each terminal that are closest together in the bottom row for the ignition circuit Garry Adding This 105303 connector fits this switch and still available from Toro https://www.partstree.com/parts/toro/parts/105303/ 2 Share this post Link to post Share on other sites
RJ Hamner 1,012 #3 Posted September 2, 2016 Thanks for the help. And I did order the connector along with the switch Thanks again Bob Share this post Link to post Share on other sites
