MTD 11/36 series 660 through 679 wiring

I have an MTD 11/36 it was given to me because it would not start. After cleaning all the safety switches and what not I figured out it would start with a jump to the starter but realize solenoid may be bad. The battery reads 12.15 volts, wonder if that will go down and I possibly need a new battery? This mower sat quite a while before I go it.

I only got this far because of reading the post here for all the mower wizards here!

Anyway the real problem is after mowing the grass I turned the key to shut it off and it just kept running and since the key will not start it and I have to jump start it at the starter it stands to reason that my ignition switch is messed up

If I was to supply the ignition switches wires colors and whether or not they are hot or whatever could some one give me some instructions as to how or where the wires should be connected to get the switch working correctly

Thanks for all the help here. And thanks in advance for all the help!!

Vince

Repeated posting.