I bought this to add lights and the strobe effect to the back of my wife's 2018 RT-L. She has a dark edition (flat black instead of chrome accents). We took the four screws out, cleaned the case, taped up the insides, and painted it.
I was unsure on installing it because it is the first time I've taken the back apart, but it was easier than I expected once I watch a few videos on youtube.
The wiring that SpyderPops has is a better configuration than others out there. SP puts on better connectors and adapters, but the best part is the brake strobe. It's not on others out there in the ether.
Recommend for safety and added piece of mind against a rear collision.