Item works fine. Brake light turns brighter than tail light as it should. No unwanted blinking when my turn signal is on as I've seen in some other products. Why not 5 stars? For me there are two things that add up to one star because manufacturer could have included these fixes. First, the square insert module is slightly smaller that the interior of the hitch so it's a bit loose. This is good to insure a fit for small hitch differences that might occur from vehicle to vehicle. My remedy was adding duct tape little by little around the module until a snug fit was achieved. I feel that virtually everyone will need to adjust the fit to be snug. Manufacturer should have included a method for making the unit fit snugly for all purchasers. Perhaps a small role of cheap tape or whatever for a self-contained installation experience. Second, half the length of the wires from the unit to the electric socket are rainbow colored, other half is a black sheath. Those bright very visible wires appearing with the light square ruined the unfettered blacked-out appearance near the unit itself. I had to wrap the wires with black electrical tape for the desired invisible presentation. I think manufacturing with black wires or at least a black auxiliary wrap (in case those rainbow colors are simply technically necessary) should be included. Just sayin' Looks great, fits snug!