OK everyone, here's the cat's meow. I placed a diode, purchased at RadioShack, in line with the same wiring connection shown in the previous pictures posted by NSXTC. The diode allows current to flow only in one direction. Now my DRLs turn on with the parking lights, but the parking lights stay off during daylight hours. I checked the current across this connection with my voltmeter and it measures only 125mA, that's 0.125 Amps. I used a 200V 1A Silicon Diode from RadioShack (part No. 276-1102 "1N4003 Micromini Silicon Diode") and soldered it to the 20g wire I used. Covered the connections with heat shrink tubing. The diode only works in one direction, put it on backwards and it won't work. We'll see how long it lasts.
Mango -- Saltwater Flyfisherman, Photographer, Varmint Hunter -- Fort Worth, Tx
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."