must remove lower portion of d post trim that finishes the wheel arch/seat belt and marries into the load space tray support trim. i need to make sure that ground is good per my stereo issue. it is confined to the rear left of the vehicle and all other electrics in the vehicle are happy. must look at the harness and ground beneath that trim. rave wants me to remove the door seal aperture. is that necessary? i know how brittle our plastic bits like to become so looking for experience from other members. not trying to break any of the plastic tabs or screws here...of course we all know they'll break anyway.