Buyers products 48 inch prewired vehicle-side replacement cable – tc1242 the vehicle-side replacement cable from buyers products is a prewired 48 in. Cable complete with a 4 flat trailer connector. It’s ideal for brake lights, tail lights, and turn signals. A dust cap is attached to protect the connectors from dirt and water. The color-coded cable splices to your trailer’s wiring. features prewired and color-coded cable for easy connection to your trailer’s wiring. ideal for controlling tail lights, turn signals, and brake lights. dust cap protects the connectors from dirt and water damage.