Hi all. I just recently changed the single tiny horn to a dual tone Farbin horns (
https://www.amazon.com/gp/product/B07TSPHC2J/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1). For bumper removal, I wish I found this site earlier:
https://www.tochr.net/1235/removal.html. TIP: after you remove the screws/fasteners from the wheel wells (step 2), slip you fingers between the liner and the fender panel. You have to feel for the retainer clips to press them to slide the trim out. Also, I did not remove the 6 front lower screws. I just disengaged the bumper from the sides and top. For access to the horn, all you have to do remove the right screw only on the plastic cover (
https://www.tochr.net/1316/horn.html). Then reach in with the wrench to unbolt the horn and disconnect the power.
Wiring the new horn is up to your preference. I combined the ground wires to a loop connector to be bolted to the frame with the horn assembly. Then I combined the power wires to a spade connector that slips into the existing horn power connector and wrapped it up with electrical tape. I did not use a relay or upgrade the fuse. I hope this helps. Sorry, I didn’t take any pics.
The horn is very loud now and sounds great. It sounds similar to the horn on a VW Tiguan.