I am a newbie at all this, so please bear with me. I got a new truck and installed the brake controller myself. Went this weekend to pick up our TT from getting it serviced...it was plugged in correctly and the lights worked okay, but yet the brake controller didn't come on. It is a Tekonsha Primus...and when I turn the truck on, the dot on the "screen" lights up, so I know that somewhere, somehow it is getting some juice. It just isn't doing what it is supposed to. I was just wondering if anyone here had some ideas about what I might could do to remedy this besides taking it in, which is my plan eventually, but I just wanted to make sure it wasn't some dummy mistake first! Someone else wrote in another post to please respond in kindergarten language...I need that, too! Thanks for any thoughts or suggestions!