Invincible Marine BR59377 TrailerWire Connector Female (Trunk) Made using the highest quality components Performance and quality tested The most trusted name in marine accessories and equipment Helps improve safety when hauling a trailer by letting folks traveling behind know your next move Ideal for a wide variety of trailers The trailer connector allows for three basic lighting functions, running, turn and brake lights plus one pin for additional functions such as hydraulic brakes Includes a female 4 pole vehicle end flat connector that hooks up to the trunk and has 48-inches of color coded wire lead Comes with a 1-year warranty