agepag

Sorry if I'm double posting but I thought I might get more hits this way. I recently installed a factory hitch from a 2009 r350, install went pretty smooth, the red wire with the 20amp fuse was missing but I was able to get one from a friend. Now I installed it into the # 70 slot, have the ground connected and the small connector into the Sam. Plugged in one of those Reese testers with the 3 LED lights and they come on but do not blink when I use the turn signals? Do I need to have the Sam programmed? Any help would be appreciated.
Thanks