Are you curious about your volvo horn relocation?
Horn Relocation – This one’s easy. Simply remove the single bolt that holds each horn to the behind-grill aseembly. Take care to hold onto the bolts and nuts. Use a little tape to mark driver and passenger side horns on both the horns and the horn wiring. Snake the wiring between the evaporator and the bumper to the plastic area below the grey part of the bumper on the side of the car on the driver side.
In that area, you will find a piece of metal with two holes already punched/drilled/cast into it. One hole will be the correct size to use the existing bolt, the other will be a little small. You have two options, drill the smaller hole out a little, or use a slightly smaller bolt. Use the extra piece of metal armature that was used to mount the horns at the front, to help position the horns such that they are not visible below the front air dam from either the front or the rear. VERY IMPORTANT -> Make sure the horn openings face downwards so that any water that gets in there drains out. Simply tighten things up and replug the wiring. You may want to use a lock-tie here or there to snug up any excess wiring you may have.