Got 2

First time posting here. User name due to having a 2012 and 2020 Miss my 6 banger.😟 Putting a trailer light converter in. Got the wiring from the taillights down to below. Trick: After taking out the one screw, pull the taillight assy. off by a piece of duct tape placed horizontally on the lens with a piece hanging out the back to grip. Simple! Looking to power it from the rear lighter instead of running a line all the way to the engine. Only LED lights so no big draw. I assume I won't have power there if the car starts shutting down non-essential loads due to failing battery. That's OK. Easy to get the rubber hatch seal off. How to get the rear inside panel off is the question. Thanx in advance. Dave