Wiring problems

Most of the wiring harnesses are plug-and-play. All the wires will be color-coded and have their colors indicated on the wiring diagrams. The thin red wire goes through a 5-amp fuse to the battery positive (+), the thick red wire goes to the battery positive (+) through a 20-amp fuse. The controller is plug and play, all other wires need to be insulated separately. If you're not sure about a specific wiring connection, please contact us at support@heatso.com.