3 Wire Light To 2 Wire Switches colors 119130 --- 3-wire vehicle to 2-wire trailer upgraded taillight switches - How does a 2 way switch with indicator work from the 119130 --- 3-Wire Vehicle to 2-Wire Trailer Upgraded Taillight Check Details switches - How does a 2 way switch with indicator work from the Check Details ← Installing Three Way Switch Three Way Switch Three Lights → Share with friends Link copied