Yes, the Upgraded Modulite Vehicle Wiring Harness Kit w/ 4-Pole Trailer Connector and Installation Kit
Item # C59496 does include the dust cover to help protect your 4-Way wiring harness.
If you do not have a mounting bracket already, you can use the Tow Ready Mounting Bracket # 18144 so that the 4-Way is not just hanging off of your vehicle. For a no-drill installation you can use either the Long Bracket # C57202 or the Short Bracket # 18140.
Another option to keep your wiring harness... view full answer...