Looked for quite a while for the correct part number, and thought it best to share here. Will have photos tonite. LED by Osram Sylvania for 2015 F-150 Back-up light: 4114. Advance Auto, $24.99. Two minute install per light.

 

Unless you have the tail lights with the BLIS sensors.

You can't access the reverse lights.

 

I thought about doing that. But instead I just turn on the exterior cab light when I can't see backing up. It's LED I think and really bright.