Thanks for the input and that's how I feel ,but let me be a bit more specific. I installed a kit on a new (my first) bike build, used a trek 3700 3 series I had,tore it down replaced ,lubed , adjusted, and dialed it in ,Nice! The install was fairly straight forward and the kit , a 48v 1500w voilamart rear hub type with internal controller and waterproof wire harness. Came with a sw900 LCD display as well. The install went great looks good . It's useless the motor has never turned under it's own power I am beyond frustrated. I've checked all connections 5 times probably , done continuity testing , halls sensors , throttle (bench test) the distributor (allinone68) through eBay over the phone told me it is the controller, so I began the wait and waited they told me their was Chinese holiday. Bla bla did I want to wait anyway we are here now I still don't have anything.but they have offered me 1/2 of purchase price back to take the repair to my local ebike shop. That would be 106.90 them being unclear about weather that included controller I countered with a figure of 180. 00 and I go away. They are willing to do that ? Why? But then although I will have gotten the kit for about 35.00 I still have no operational bike. Need a controller and if I go external all new wiring and connectors , and the fun of figuring out exactly what exsists on the bike now and matching it with new wiring. Not tough for an electrician but although I am not helpless , a job . I'm thinking the best case decision is new controller just like what is in there now ? Don know ????!