Disclaimer: use this as a guide at your own risk. I'm not responsible for damage, warranty issues, blah blah blah...
Got tired of the single pitch horn, and it isn't very loud, so I yanked it. I attempted to take some video/pics, but the working clearances are so tight (did it on the ground) they didn't come out very well, so I'll attempt to explain...
The stock horn is located on the driver's side behind the fog lamp (if so equipped). I jacked up the driver's front wheel, removed it, and pulled out the fender liner, which was five torx (#20) screws (three from inside the wheel well, and two from under the front) and four plastic upholstery plugs (inside the wheel well, easily seen). I tried to see if the front half of the liner came out, but couldn't figure it out, so I just pushed it toward the rear a bit. Next, three nuts (two rear, one front, by feel) to pull the windshield washer reservoir (10mm), and I ended up clipping three of the cable plugs holding the harness to the reservoir (I used cable ties to reattach when I was re-assembling). Also, from the engine compartment above, the filler tube for the reservoir comes out by twisting about 1/8-turn CCW, which helps pull it out of the way (if the tank is empty is it a bit easier to do all this).
The horn was -barely- visible at this point, and a 13mm wrench to remove the bracket from the frame was used. The wiring harness is two-wire, easily pulled off of the horn.
I replaced the stock horn with a Wolo Bad Boy model 419 (two-tone direct drive air horn), and it just barely fit. I used the bracket from the stock horn and drilled the hole just a bit larger, then placed it back in the same location. Cut the wiring harness and attached female spade terminals to plug into the new horn (no need for a relay). Reassembled in reverse order (using the cable ties as mentioned previously). Now I get noticed!
Got tired of the single pitch horn, and it isn't very loud, so I yanked it. I attempted to take some video/pics, but the working clearances are so tight (did it on the ground) they didn't come out very well, so I'll attempt to explain...
The stock horn is located on the driver's side behind the fog lamp (if so equipped). I jacked up the driver's front wheel, removed it, and pulled out the fender liner, which was five torx (#20) screws (three from inside the wheel well, and two from under the front) and four plastic upholstery plugs (inside the wheel well, easily seen). I tried to see if the front half of the liner came out, but couldn't figure it out, so I just pushed it toward the rear a bit. Next, three nuts (two rear, one front, by feel) to pull the windshield washer reservoir (10mm), and I ended up clipping three of the cable plugs holding the harness to the reservoir (I used cable ties to reattach when I was re-assembling). Also, from the engine compartment above, the filler tube for the reservoir comes out by twisting about 1/8-turn CCW, which helps pull it out of the way (if the tank is empty is it a bit easier to do all this).
The horn was -barely- visible at this point, and a 13mm wrench to remove the bracket from the frame was used. The wiring harness is two-wire, easily pulled off of the horn.
I replaced the stock horn with a Wolo Bad Boy model 419 (two-tone direct drive air horn), and it just barely fit. I used the bracket from the stock horn and drilled the hole just a bit larger, then placed it back in the same location. Cut the wiring harness and attached female spade terminals to plug into the new horn (no need for a relay). Reassembled in reverse order (using the cable ties as mentioned previously). Now I get noticed!