What purpose does the 4 square access pannels inside the bed walls serve, other than gaining access to the exterior trim clips? I'm in the process of cutting up a loyale to fix the cab floor rot, and was thinking of cutting out and putting the side plastic storage cubbies from the loyale rear area and putting them in where the brat access pannels are.

you can get to the wiring harness connectors for both taillights too.

I routed my CB antenna wire thru one, then into the cab.

 

when you are camping, you could probably put extra gear in there, stuff like trash bags, raincoats, hats, gloves, all in ziploc bags to keep from getting wet or dusty

 

WOFC