In order to make my stock horn louder, I decided to add a few Hella horns under my truck. These produce a much louder, higher pitch sound than the stock horns. When used together, they are a great way to let someone know you are there. The installation wasn't difficult, just time consuming. I wanted to keep the new horns close to the stock horns, while keeping the relay next to the battery. This meant I would need to run multiple wires across the front of the engine bay. The hollow front radiation support proved to be a perfect wire conduit.

Looking down the front after removing the headlights, you can see the stock horns. I pulled the connector off to use as a signal for the relay.	I spliced the wires, so the stock horn will activate the relay for my new horns. I also used the radiator support to run wires over to my battery	The radiator support is a great wire conduit across the front of the truck. I used a heavy gauge wire as a pull line.
The signal from the stock horn powers the relay. Then, a heavy gauge wire sends power to the new horns directly off the battery. These wires run through the radiator support.	Here's the relay during testing. All wires are wrapped for protection. The relay is grounded to the main ground point next to the battery.	The main feed for the new horns is encased in flex pipe for further protection. The horns are grounded to the frame using their mounting brackets
The Hella horns hang upside-down on the front of the frame rails. This was the best protected spot I could find without putting them inside the engine bay.	I added electrical tape across the connectors, so water would not get in the horns.	The horns sit behind the air dam, directly under the stock horns. This should allow for better sound without exposing them to the elements
The relay installs next to the one for my off-road lights.	The main ground is to the left of the relay. Don't forget to put a fuse between the battery and relay. Keep it as close to the battery as you can.