This is underneath the dash on the driver's side. The top arrow is pointing to the converter. You have to put the packing around it(sponge looking stuff) and then screw it into the hole above it on the body panel. Unfortunately I was using that hole for a grounding point for the auxiliary light switches. Since the bracket was metal, and the converter was completely surrounded by the plastic box it was OK to leave the ground point. So once the converter was screwed in I took a look around for the plug that goes into it(second arrow). It was the white plug with all the different colored wires that was taped to the main harness coming out of the firewall plug on the right. The third, bottom arrow is pointing to the sponge packing material that the instructions said to wrap around the part of the harness that goes up near the converter. I think this is to protect the converter plug wires from rubbing. I have a bunch of wire loom from the auxiliary lights tucked in there so your FJ will probably have more room to work around.
This is beneath the rear bumper. The plug is on the driver's side and it was a pain to get that cover off. I had to use two pliers and had to be careful not to break the white tab that was holding it in place. I then plugged the harness that came with the package into the harness that was already there. After that I inserted the brown zip tie that came with it along with another black zip tie(mine) to hold the harness up higher on the bumper. I didn't want anything to hang down.
And finally the plug screwed into the plate that came with the hitch. The white zip tie is mounted on this plate and holds the harness nicely.
The final step was to put in the two fuses and the relay into the large fuse box that sits right behind the battery.All finished in about 30 min. The longest part was taking off that cap on the rear of the harness.
