Cable does not work, company does not respond. Is it possible that this only works with fifth wheels (difference in wiring?) and not with my trailer? I have a landscape trailer with the same 7 pin plug. It looks like a really strong cable. I bought this because the location of the plug on my SUV and the length of the cord on my trailer causes the original cord to be taut when turning. I bought it before I really needed it and was thrilled when I finally got to use it for the first time, but it didn't work. I put the cable aside and used a different vehicle. I remembered this a while ago and tried it on another vehicle but I am not getting any light on my trailer when using this cable. In the last 2 months I have contacted the manufacturer twice via email and once via voicemail. They didn't answer at all. Their website says they have a 5 year guarantee. I've had mine for about a year and don't need it. Will Conntek reply?