... light bar with 48pcs Red LED for car Use a butt connector to connect the tailgate bar’ ... solder or use a 3M™ Scotchlok™ type connector to secure this connection. 8. Now you can ... , and test your tailgate light bar for full functionality. Flat 4 Pin Connector Diagram: A - Red Wire: Ground ... brake, hazard and turn signal light functions . Enhance safety for Trucks, SUVs, RVs, Motorcycle & ATV Trailers, Live ...