Has Anyone Retrofit Keyless Entry To T680/W990

I'm Looking For Information On Retrofitting A T680 Or W990 Built Without Keyless Entry.​

Background
Found Out A Truck Was Built Without Keyless Entry Due To Supply Chain Shortages And I'm Looking
For Options To Remedy This Issue. Figured It May Be A Common Issue Or Topic To Those Finding
Similar Trucks Built In The Same Timeframe.

Parts
I Think I've Found The Module And Need To Locate Some Remotes (Unless Someone Here Has A Module And Remotes Before I Lock The Others Down) NOT Looking At Aftermarket, Looking For Factory "Plug And Play"

Research
Looking For Some Advice If Anyone Has Already Done This. I Tried Searching Google, Facebook And This Forum Before Creating This Post, But To No Avail.

Questions:
(1) Where Are The Connector Plugs On The Wiring Harness For This Kit?
(2) What Settings In The ECM May Need Changed If Any At All.
(3) Anything Else I May Want To Consider Or Advice You Have On This Topic?

Summary
If Someone Has Been Down This Route And Has Any Advice, Or Selling The Parts I Need To Do This Retrofit I Would Be Glad To Know IF Its Possible And What It Would Entail To Do So. Thank You For Your Help And Advice!!!

 

I Considered That But Most Are Hardwire Units And Need Splicing Which I Am Fully Capable of Doing But Prefer To Utilize A Factory Plug And Harness If Adding A Factory Module Can Prevent Invasive Wiring. Small Details But That Is Why I Am Leaning To The Factory Unit Instead Of Aftermarket.