I forget what bulb it is but you just splice it into the wiring. And actually I didnt use resistors for the DRL. I put them on the turn signal wiring to prevent the fast turn signal indicator and the DRLs just worked. Im not sure if its because of the bulbs I bought but I know they are not CANBUS ones or if the wiring is integrated some how.The DRL is an 1157, is it not? How do you use a resistor with that bulb?