I would just do the obviuos checks like the ground from the neg battery
cable, the main groung on the firewall, under hood on pass side, and look for
water in the headlites and taillites.
it sounds like a bad DRL module, but more to it than that. don't go to
the dealer, i did and they charged me $250 to tell me i have a short, well
DUH, tell me something i don't know. just call around and find a good
mech who specializes in electr stuff, they're out there and much cheaper.
there is a thread about DRL's in the electronic section, perhaps read
that and it will give you some info.
dave