After installing the parts, my self propelled is now working like new but the kit is missing a few things:
1 When i buy a upgrade kit i would expect some instructions
2 The one wire (I think it was yellow or orange) had a connector on the driver board of the kit, but was soldered on the mower. Some type of solderless connector should come with the kit. I soldered mine and put shrink tube over the connection.
3 The 2 drive wires from the board to the motor have no insulation! I would imagine if these two connectors touched it upgrade would fail. Shrink tube or insulated connectors are needed.