Lasfit led tail lights Ram truck

2021 Ram Big Horn LED Lasfit brake light and reverse light bulb replacement. The test at the end starts with Brakes applied, then reverse lights on, then brakes are let off right before truck is turned off to see what the regular tail lights look like. I received no money and make no endorsement of Lasfit. I've seen only a few videos showing how to do this. I have no error lights on the dash yet. Higher trim level rams already have LED tail lights. This is a Big Horn trim.