2014 StreetGlide - I've just installed the Custom Dynamics rear 10inch lazer lighting for better visibility and exactly as explained but beed told by CD tech that I need the ECM flashed to change the option for brake and turn on same wire? With and without the turn signal decoder they say you need the brake lights light up yellow just like turn signals??

I asked the HD dealer service guys and they're not sure but will gladly have me come in and try for an hour labor charge