At my parent’s for the first time since getting the model 3. My dad installed a 14-50 for me and I’m trying the adapter that came with it. The in car screen just says ‘ready to charge’. We’ve confirmed power to the outlet, power to the adapter piece and to the transformer portion. Beyond that there’s no power the run of the cable going into the car. However, if we swap adapters and use the standard 120 and plug it it’ll charge at 8km/h. The current tester lights up the entire run. Any ideas? Defective 14-50 adapter?