Hesco Inc. Oreck Schematics Oreck Schematics. Scan the list below for your model number and use the corresponding "click for schematic" prompt. If you have Adobe Acrobat installed, HELP ME!!! oreck xl2 motor wireing - vacuumland How can you ask 'what goes where' when there's a wiring diagram? Most Oreck motors are marked with a black dot for which terminals are hot or neutral.