Fangrui Product Details The Turn Signal Switch Is Made Of Durable Plastic Material, And Has Gone Through Testing So That You Will Get A Fairly Reliable Switch To Give You Full Control Of Various Vehicle Systems. This Multifunction Switch Is Manufactured To The Part Number Specification To Provide Factory Fresh Appearance And Direct Fit. Part Number Connector Helps Ensure A Solid, Positive Connection. The Turn Signal Switch Has Gone Through Testing So That You Will Get A Fairly Reliable Switch To Give You Full Control Of Various Vehicle Systems Vehicle Specific Fit:for Mercedes-benz Truck Part Number:6555400145 Product Information:placement On Vehicle: Front Pin Number:15(8+7) Colour:black Material:plastic How To Use: Step1: Push The New Turn Signal Switch Into Its Slot. Step2: Push Both Small And Large Wire Connector Harnesses Into The Turn Signal Switch. Step3: Remount The Bottom Half Of The Shroud To The Steering Column. Remember To Stretch The Lock Groove Around The Lock Lever For Reinstallation Step4: Screw The Bottom Half