so here is my way of wiring up '03+ Tahoe rear doors
you've got the plug aka the problem
just big enough to snap in to the door frame so that means no running after market speaker wire
and not really any room in the plug for 12 gauge connections
but there is room if just the black clips are connected since they are smaller than the actual plug
the pins that need to be pulled out
notice the tabs...
bent them over so some heat shrink would slip over
each pin heat shrunk so nothing can short or ground out
silicone lube and duct tape is your friend for pushing wires through grommets
black plugs all wired up
not exactly water proof but I'll be thinking of a solution soon
the boot was only meant to wrap around the white plug not fit in between the door frame
RCA's, speaker wire, and Rockford Fosgate bass knob
waiting for a home
kinda messy but I still need to mount the crossovers so it will get cleaned up