I could not find a diagram for your year model, but the diagram for 99' and later shows DRL circuit and module. From the looks of it, you should be able to take the purple/white wire to ground on the module, which will fool it into thinking the parking brake is on, thus turning off the DRL, which should still allow normal operation of the headlights. It doesn't show whether the parking brake is a double pole, so the dash "brake" indicator may come on. If this happens, insulate the wire going to the parking brake, and ground the DRL wire at the module. Then try the parking brake to see if that idiot light still works.