THIS MUST BE PLUGGED IN DIRECTLY AT THE TAIL LIGHT. IT WILL NOT WORK PLUGGED IN ANYWHERE ELSE. IT WILL FIT AT ANOTHER CONNECTOR ALONG THE BED BUT THIS IS NOT WHERE IT GOES. You can use this at either tail light and can use two per vehicle if you want to power a whip on both sides. This listing includes two harnesses. One for each side of your RZR so you can power two whips individually. WIRING INSTRUCTIONS: The red and yellow wires are both power wires. You only need to use ONE of them. You can cut off the unused one and wrap the end in electrical tape. Yellow will provide 12v any time the key is on. Red will only provide 12v when the brake pedal is pressed. Use the yellow wire to power accessories such as whips and license plate lights. Use the red wire to power additional brake lights. Use the black ground for all applications. THIS MUST BE PLUGGED IN DIRECTLY AT THE TAIL LIGHT. IT WILL NOT WORK PLUGGED IN ANYWHERE ELSE. IT WILL FIT AT ANOTHER CONNECTOR ALONG THE BED BUT THIS IS NOT WHERE IT GOES.