Roman

2005 Holiday Rambler Class A and 2012 Terrain as the toad. Got the tail light kit for the terrain installed and run to the from to the 6 pin connector. Plugged into RV and no lights. Checked cable at the toad end with meter and test light, all good. Hooked the 7 blade end to my 2016 Canyon and the six pin to the Terrain and all lights worked. Hooked back to RV and nothing. HELP