The wiring diagrams are located in the operators and installation manual. To locate any information on your unit, you will first need the model and revision number. Please see the following FAQ for assistance in locating these numbers: http://bit.ly/17rzznN
Once you have this information you can find manuals and parts listings for the unit here: http://bit.ly/12pIs1I Select (PRESSURE WASHER, PORTABLE GENERATOR, STANDBY GENERATOR, OUTBOARD, SNOWTHROWER) as your product type. Enter the model number as directed.