This simple plug and play harness will give your 2017-2022 Super Duty or 2015-2020 F-150 mirror spot lights the ability to come on and stay on whenever the factory button is pressed. Originally these lights turn off when driving over 6mph.
This is for the FORWARD facing spot lights in the mirror, not the puddle lights that point to the ground.
Only one needed per truck. You MUST have the two buttons in the third photo under the vent.