These marker lights are made from factory housings with 3 lenses options
These will have a simple 3 wire hook up
Black wire (ground)
White Wire (DRL 12v)
Amber Wire (Blinker 12v)
You will have to tape into the factory pig tail that did plug up to the mirror lights.
If you do not want to tap into your wiring we have a plug and play option here: https://www.midsouthled.net/collections/gm-tow-mirrors-and-tow-mirror-parts/products/2019-gm-silverado-and-sierra-tow-mirror-marker-lights-new-style
These are Made to order there can be a 2-8 week wait on them. these are also no returnable its a custom made item. You do have a 1 year warranty on them so if there is a issue you will need to send the part back to be repaired or replaced we will make that decision. The buyer is responsible for SHIPPING.
If you do choose to send in your marker lights once you place your order we will contact you with our address to send them to.
If you choose the Colormatch option please put your color code in the note section when you check out if you don't we will contact you for your paint code.