Okay, I have the Tekonsha controller in my truck. I checked the 3rd brake light, it works. I checked Pin 1 and Pin 2 fuses are good in both. I checked all wiring to be sure both pigtails were plugged in. I have not checked for voltage yet but my controller light does nothing when I hit the brakes. All of my other vehicles with controllers do not need a trailer hooked up for the controller to light up. Is this 1 different?