Hi Zigzagguzzi:
I do not have the schematics for a 2004, but I do have them for the 2003 and 2005. The following schematics are from the 2005 service manual.
Left side DRL relay
Look for FUSE BLOCK #2, Fuse 11 (7.5A) near center of picture above.
Right side DRL relay
Look for FUSE BLOCK #2, Fuse 10 (7.5A) near center of picture above.
The DRL relays are energized using the headlight switch. This reroutes power to another fuse bank.
Without going through a lengthy explanation, the easiest way is to remove Fuse 10 and 11 from FUSE BLOCK #2, located underneath the driver's door side fuse panel. Let us know how it goes.
Seek
ps. It looks like the 2003 DRL schematics (8W-50-7 & 8W-50-8) have a typo. For both left and right relays, it says it's only using Fuse 11 (7.5A). In section 8W-10-10, it lists Fuses 10 and 11 for DRL's.