The pump is located in front of the wheel house (drivers side). Remove the lower plash shield. Pull the center of the plastic rivets and then pop them out. Same for the forward wheel house splash shield. Be advised that there is one mounting bolt on the back side of the pump (blower) that you'll have to use the Braille method to remove. It's a PITA. The relay should be in the under hood fuse box I believe.
Didn't pull the headlight when I replaced mine last summer. I did not have much problem with the intake hose, neither the original nor the updated version. That rear mounting bolt is what gave me fits. The headlight is good info (for someone else), but I doubt I'll ever need to change it again.