....it's hardly a "procedure", just leave the lights on for a few minutes before you shut everything down and plug in the tender for the season.
I'm not saying you do it every night on a daily driver.
It's just a little trick to make sure the battery takes a full charge if you are putting the car away for a few weeks on a tender. You just unload the car and get the garage ready while the lights are on and then turn off the lights and put her to bed.
Didn't mean to lead you to believe it was a big production.
Forgive me for not being more clear.