So this is an old thread, but I found it trying to find pics of your OME / 5100 setup that I had already seen.
Anyway, I'm not sure if you've done anything with this yet, but I figured I would give you a heads up. The homelink only works for like 30 seconds when you turn it off and lock it.
I swapped in a Camry overhead console ($35 on ebay), and tested it by sitting in the truck in the driveway. I pulled the key, locked the doors, and waited for the map lights to go off on their own. Homelink was inop. I hope that helps you or anyone else that comes across this. Sorry for the bump.