For the record, Tactical 4x4 no longer supports the sensors on the rear bumper with tire carrier. I don't know why.
I have a pinched wire on one of my sensors. I don't know if this is causing it to fail though. I've been thinking about getting the duel can holder for mine. It's expensive though.As said above they had issues with people's sensors activating from the wheel carrier and tire. The bumper I had did not have this issue but the tire was mounted as high as possible on the arm. Another car that had a bumper from the same order did have issues. YMMV. Their swingouts are well thought out and light for what they are. Grease zerk and gas strut are a nice touch.