Need wiring schematic for scotts 1542h riding mower.

Hi,
Schematics are hard to come by for Deere without buying the tech manual. I can get a picture of the harness, but there is a serial number break. One harness uses one diode and the other uses two. In one the color is red and the other it is black, I think. They are different part number and appear to be flat rubber blocks that encase the diodes and plug into the harness around the engine or beneath the dash.
Let me know.
Peace,
Clarke