deere garden tractor wiring diagrams

I am trying to put a 12.5 hp kohler from an STX38 into a LA110 automatic that had a Briggs 19.5 hp in it. I have the engine bolted in. The crankshaft is the same diameter and length. It bolted into 3 of the same 4 holes the kohler came out of. The 4th bolt went into another hole in the frame nearby. There are 12 bolt holes in the frame around the crankshaft clearance hole. I need to do some electrical wiring conversion. They both have a fuel bowl solenoid. However the other wires from the tractor I am not sure what they do, or where they go. Is there a free online source where I can get the diagrams for both units. My FIL stopped at the Deere Dealer this morning, and got photocopies of what appears to be the parts diagrams. They are not that helpful. I have also posted on the Tractor Talk page.

I saw your listing on the other thread. IN YOUR PLUG / PLUGS. Most engines have a wire that goes to the key switch. This turns the fuel shut off solenoid On/Off. Will read 12volts with key on. There should be another wire that has power on it when the engine is running. That is for the headlights. Another is grounded when the key switch is in the off position. This kills the engine and when you turn the key switch in any other position it is not grounded. You might also have a setup where the power to charge your battery is on a separate wire and is not always the same as the headlight wire. That should be all of them. If you have the plug on the old engine you might be able to transfer it to the new one. Those little round clips in the plug will unlock. You need some very tiny tools to un lock them and Don't break them. With a good meter and a little patients you should be able to dope in out. A diagram for a Kit Bash job would require your tractor and the one you took the engine from. Getting a little complicated. If I helped, good. If more questions ask us. I have exchanged several engines with no problems but when you throw American and Japanese engines at each other the plugs can get a little crazy. See what some of the other guys say.