Looking to see if anyone has any good ideas on where to locate the trailer wiring harness on a PSC RockBrawler II Rear Bumper?

I know the bumper is not certified for towing but I also do not want to zip tie the wiring harness for the few times I use it each year.

Thanks for your time!

 

I have used a command hook up inside the bumper as a clip for the harness on other bumpers. Would assume you could here as well.