I used a battery charger to test out the brakes. I just hooked a lead up to each wire on the magnet and bypassed the brake controller. It worked good, so I am ready to reinstall the wheels and tires.
I spent the rest of the day unwiring my lights. I am so glad I had a junction box in between the tail lights and the front trailer plug. This made it easy.
I had the tail lights wired up to the "brake control" post, which was not right. It took a few hours, but I got it back where it needs to be.
Next project on the list, is to finish the underside of the trailer, so I can put the belly pan back on.