Here you'll find detailed instructions on how to relocate your horns to clear
obstructions from the intercooler on the Volvo XC70.
Click images to enlarge
1. Along the top edge of the bumper, under the hood, are plastic
rivets. Push down the center with a screwdriver to release the
tension and pull them out. Save the pieces for reinstallation.
2. Do the same with the two plastic rivets beneath the car.
3. Inside the wheel well is a torx screw that needs to be removed. (both sides)
4. Pry off the two bolt covers on the front of the bumper.
5. remove the two bolts with a 13mm socket wrench.
6. To remove the wipers, flip the cover back and remove the 8mm bolt.
7. Gently pull the hose off the wiper to free it.
8. Slide the bumper forward to get it off the vehicle. This is what
things look like once it is off.
9. Remove the horns and save the 10mm mounting bolts for later use.
10. Using a crescent wrench bend the mounting bracket.
11. It should look like this when you are finished. The passenger
side will get bent in the opposite direction.
12. Now score the plastic housing with a utility knife and peel off
part of the opening along the score with a pair of pliers.
13. This is what the horn will look like. This is necessary because the horns will get mounted against the intercooler and would not have a clear audible outlet if left uncut.
14. Drill a 1/4" hole in the plastic between the rear of the
bumper and the intercooler on each side.
15. Using the original bolts, mount the horns behind the bumper as
shown.
16. While we're at it we might as well remove the intake baffle. From
the top of the car you can see the clip where the baffle attaches.
Pry the clips in with a screwdriver to release the left side of the
baffle.
17. Then simply swing the baffle down perpendicular and gently pull
it out of the housing on the right side. This will allow much
more air into the intake and also remove a restriction from in
front of the intercooler.
18. This is what it will look like once you've relocated the horns
and removed the baffle. Wide open Intercooler!
19. To put the bumper back on, simply slide it back on
from the front and reinstall the fasteners. Be sure the tabs on
the upper corners near the wheel wells align properly with the slots
on the inner mounts. Reinstall the plastic rivets by inserting them
and pushing the inner pins flush with the tops.
