Well on to the site
Yes, you may fish a wire through the existing gasket where the trailer wire plug is designed to go out on the drivers side. It's very simple to do and no drilling is necessary. I also believe someone (proeddie, perhaps) came up with an excellent solution to mounting the RV style receptacle in an electrical PVC handi box. Personally, I just drilled a hole in the plastic bumper for my receptical and it is next to impossible to see unless you are looking for it.