First, let’s discuss the components of a 12 volt. The main cable running from the battery to the ignition switch, and the second cable from the. Web identifying components of 12 volt continuous solenoid wiring. Web depending on the model of your winch, the wiring diagram may also include additional components, such as relays and contactors. Web in this article, we’ll take a closer look at 12 volt reversing solenoid wiring diagrams and discuss how they can help you better understand this important part of.