For the light bar one I listed, I would still have to hardwire a portion as the limited has BLIS, which I really don't want to do. I'm not sure why..i may ask them.Apparently this Curt connector allows you to use use the 5th pin and you don't have to splice.
CURT 56584 5-Way Flat Output
From Opt7 Website:
Adapter Module: Add if vehicle has a rear camera, tow-assist or a rear parking sensor.
Blind Spot Sensor Equipped Vehicles Must Hard-Wire Directly to Tail lights: