Here is something else that I found.... In the fuse panel under the hood, pull the DRL enable relay and the DRL relay. The DRL enable relay routes power from Fuse #40 through the normally open terminals to the normally closed terminals on the DRL relay, then through the DRL resistor and then to the low beam circuits for the L & R low beams. The DRL relay coil is powered by the high beams, the Fog lamps or the instrument cluster ( any of the 3 can power the DRL relay, and the normally closed terminals open ). The Instrument cluster is in place of the low beams, as with the DRLs on, this could power the DRL relay, opening it, which would turn off the low beams, which would drop the power to the coil, which would ( see where this goes ). If you pull both the DRL enable relay and the DRL relay, this will have the circuit to the DRL relay dead, and the DRL resistor dead, which should turn off the DRLs. Do not see a reason to place a jumper in the DRL relay normally closed position, as this would put power back to the DRL resistor...