1、4 WAY TO 7 WAY: This trailer wiring adapter makes it easy to connect a vehicle plug and trailer plug, converts your vehicle's flat 4 way connector to a standard 7 way plug. 2、PREMIUM MATERIAL: This trailer wiring adapter is made from quality plastic, which is sturdy and durable, preventing oxidation. 3、HIGH CONDUCTIVITY: The brass terminals and tin contact provide high electrical conductivity. The dust cover can protect plug from dust and corrosion. 4、RELIABLE: This trailer wiring adapter provides reliable trailer power supply, suitable for most vehicle wiring components such as turn signals, brake lights, taillights and auxiliary power. 5、EASY INSTALLATION: This trailer wiring adapter package includes mounting bracket, screws and nuts for convenient installation. Item Type: Trailer Wiring Adapter Material: Plastic Input：6-24V Wiring Harness Connection: Brown Wire (from 4 way Plug): Tail Lights Green Wire (from 4 way Plug): Right Turn Signal Yellow Wire (from 4 way Plug): Left Turn Signal White Wire: Attach to a Vehicle Ground Point Yellow Wire: Spare Wire, Backup Blue Wire: Connect to Output Wire on Brake Controller Black Wire: Connect to Fuse Block or Fused Battery Lead 1 x Trailer Wiring Adapter 3 x Holder 2 x Screws 6 x Screw Pumps 6 x Nut