I made angle brackets for my 6 panels. Each panel has 4 brackets for 24 holes and 2 brackets for my circuit box. Drill the hole, fill it with dicor lap sealant, add a generous amount of sealant to the bracket and screw it down. Then add sealant on top of the screw and around the bracket. The sealant self levels for a clean finish. Some rvers drill a large hole for the wires to go into the rv. Same deal, generous amount of sealant around that elec box. I ran my wire down the awning arm then drilled into the bay where the controller and on off switch is.
