Overall it is fine for now. I installed it in the rear side of the fiberglass bed of an '09 Tacoma for an extra power source.  Easy wireing to the +12VDC hitch wire bundle and a bumper bolt ground, but, the fuse holder it came with prevented the fuse from making contact on one end.  After about an hour of troubleshooting I discovered the fuse was not contacting the the non-spring side of the fuse-holder and pushed it in. Time-will-tell if it will remain functional or if the contact will recede into the housing.  Then I would need to replace the fuse holder.  I think it is as nice a +12VDC outlet device as one can find, with the one star ding due to the questionable fuse holder it came with. Be aware of the seal loss from the heat shrinkage factor others mention; mine has not been on long enough to discover this problem. So keep it above snow/water-line and tape off the connections.