I tapped into the Orange (Drivers side) and Baby Blue (Passenger side) wires right at the connector under the bed. I ran new wires to my 3/4" Side Marker lights I bought off Amazon and brackets off eBay. I could have cut out the holes in the box under the taillights but decided against that. I know some folks have tapped into the backup lights to use as signals but where I live and I'm sure it's across the country, turn signals should be Amber or Red.