hey guys, just to save me from going through 190 pages worth of stuff, i have a 2015 silverado with the factory projectors, i bought the ddm kit with the error canceller box, thats what the said to use when i contacted them and i believe i read it here as well. i was surprised that it doesnt come with a relay and just relies on the power from the harness for the lights, should i use a relay or will this work fine? also theres a blue wire with a ring terminal on it, im assuming its a ground? the box had zero instructions and their webpage help section is shit to say the least. thanks