Good call, you wouldn't want to have to turn on a light to power up your antennae.
Why not? Makes perfect sense to me, ROTFL!
Chris & Donna
2014 Voltage Epic 3990, 600AH Lifeblue, 1895W Solar, 3K Magnum w/AGS, 3X Micro-Air ES
2018 RAM 3500 Laramie Sport Crew Cab 6.7 Cummins, AISIN 4X4 DRW 4.10 Long Bed Dually 2004 Sportster 1200c
If you are replacing your standard antenna, the button you had to push was a 12v power supply for the antenna. It injected the 12 volts into the coax but you could use that as your 12 volt feed by running a wire alongside your new coax (if you are running new coax).
edit, I just looked at the product you purchased, looks like it comes with the injector for putting power into the coax. You can place that "power supply" where your old button (or switch) was.