These Tow Mirrors are designed to replace the factory mirrors and will install just as the originals do. They make perfect replacements with great upgrades that have good cost savings over the dealer parts..
Fitment: 1999-2007 Ford F-250 Super Duty 1999-2007 Ford F-350 Super Duty 1999-2007 Ford F-450 Super Duty 1999-2007Ford F-550 Super Duty 2001-2005 Ford Excursion [2-Door Regular Cab | 4-Door Extra Cab | 4-Door Crew Cab | 4-Door Sport Utility] ATTENTION: Mirror Functions will Operate the Same as OEM Mirrors Functions Only ATTENTION: 1999-2001 Models Require Wiring to get the Signal to Function ATTENTION: Compatible on 2001 Excursion Models Built After 2/18/01 Only Mirrors Can Be Extended Out Manually To Provide A Wider Angle Of Rear View. OE Fitment or Replacement for the Stock Unit Extends by Telescoping / Manual Folding Mirror Dual Glass Type : Includes Spotter Glass Mirror, Improve Visibility on Blind Spot During Daily or Towing Activities A Heavy Duty Truck Needs A Heavy Duty Mirror, It Will Dramatically Increase Both Your Vehicle's Appearance & Value Manual Telescoping Dual Arm Electric Power Remote with Heated ( Defrost function ) Gives You Wider Angle Driver side only 
