Top critical review
8 people found this helpful
Caution The Positive and Negative Markings Are Wrong
on April 12, 2012
I ordered these connectors to use on a CCTV system. The screws were marked with positive and negative markings. On most low voltage devices the center pin is positive. I assumed that the positive was the center pin and hooked up the wiring that way. After completing the wiring I found that the markings were inconsistent. Some were marked with the center pin as positive and others were the other way around. It took me some time to figure out why I was getting voltage on the shield of the coax and the cameras were not working. If you buy these just keep in mind the + and - mean nothing. They worked great after figuring that out. I would buy them again but I would test them before I installed them.