~~~

 

yes the second horn (on a MY02 and up) is behind the frt bumper..

the 01 horn (single is loacted there as well)

 

If removing the front bumper is easier for you then go ahead but I find removing the slanted air guide is quite easy. Then you can work from above and with one hand through the front grill opening.
First remove the 4 fasteners on the beam that the hood latch is mounted on. The center screws come out, then the insert around the screws pull out.
Then you have to look forward and under the top of the front bumper to see that there are 4 more fasteners. 2 of these you can see easily while you remove them while the other 2 you need to work blind. These fasteners also have a center that pops up (use a small flat blade screw driver to lift up the centers) and then the whole fastener lift up and out.
Mark reference marks for the hood latch assembly so you can put it back exactly the way it comes out. (You can use masking tape along two edges, cut the tape.)
Then angle the guide down on one side, compress a bit and pull it out.