Just an update in case any of you run into the 'no daytime running lights on your Canadian Jeep TJ' syndrome. I tried 6 different DRL modules, none of them worked and all of them malfunctioned in one way or another! But the normal hi/lo running signal brake lights work just fine with no DRL module at all.

What I ended up doing to get my jeep 'canadian legal' was to install a relay triggered by the fuel pump circuit in the fuse box. There was room in the fuse box for the relay and wires, so it looks neat. I drilled a small hole in the front of the fuse box to run the relay ground and 40A-out wire, then sealed it with silicone so water can't splash in to the fuse box. The 40a wire is spliced into the low beam wire of the headlights.

It's simple and works great with no effect on the normal lighting controls or operation. It is also easy to undo if you ever want to get rid of the DRLs again. You could also wire it this way into the front signal lights instead of the low beams; I think signal lights are legal as DRLs in Canada too, but I didn't want to push my luck...