I installed a Version 2 Bushtec deluxe hitch with the isolated plug and play wiring kit. I also installed an EC converter for a four wire system to pull a Harbor Freight trailer that I built. Everything works fine except when I have the turn signals activated and apply the brakes, the brake lights override the turn signal on the trailer. Everything on the bike is plug and play so I couldn't screw that up. When I built the trailer, I took the time to run an extra dedicated ground wire to all the lights and did not use the chassis as a ground. Can anyone help me solve this problem? Thanks in advance.