Where can I get a jd 111 wiring diagram to help in troubleshooting?

Don't know yet but what's the problem?

Had a bad solonoid and key, replaced them, no turn over, can start at starter. Not sure which interlock, wanted diagram to troublrshoot

The bad " key" is this referring to the ignition switch the key gos in?

Also what are you calling "interlock" ?

Yes, bad ignition

Ignition is fairly straight forward. There is power to the switch then switch to solenoid and then to starter.
The other wires on the ignition switch is for lights etc.
What exactly happen and exactly what did you do or change so we can walk through this.
What was working and what didn't. Did you test the starter yet?
When you say "bad ignition" is that just the ignition switch/key was bad? or no ignition in the whole system to starter.
Sorry not trying to jerk you around but need good details to help here.

Do you have the engine model No# which could help greatly here. Meanwhile here is how to test the system.
Check battery for charge. It must have at least 12 volts. If battery is dead and you charge it for and hour or two and it still does not have 12 volts, the battery is bad and must be replaced.

If the battery is good, check the voltage to the starter by taking a volt meter and grounding the black probe to a good ground and touching the red probe to the starter terminal. Turn the key. If all 12 volts are going to the starter and the engine still will not crank, then starter must be repaired. If less than 12 volts are going to the starter, check for exposed areas in the wiring which could cause a partial ground or corrosion. Remove the corrosion, if any, and tape up the wire with electrical tape.

After all the above checks have been done, finally check the starter solenoid. To check the solenoid, remove the wire from spade terminal. With a screw driver, touch the spade terminal and the hot side of the solenoid. If the starter turns, the starter solenoid is good and there is a problem in the safety switches. The solenoid is usually located on the back side of the accessories panel, in the engine compartment, on Riders and Tractors. On Rear Engine Riders, the solenoid is located under the seat or in a separate compartment. Follow the Positive (Red) battery cable to find the solenoid.

Check the ground cable at the battery and where it connects to the engine or chassis of the power equipment. Replace cable if necessary

Get back for the details...

21 BOAT, I think he has the same problem that I do. Turn key nothing. Bypass interlocks by going right to starter work fine, Its either the seat safety interlock, the PYO intelock or the LH brake interlock. To start this mower, you have to be
a. in the seat
b.PTO off
c. left pedal depressed
d.In neutral