Install guide

La Cucaracha, Dixie & Sniper

The La Cucaracha, the Dixie, and the Sniper all wire up the same way: one electric horn, a direct drive compressor, and the included relay harness. Here is how to wire it up. Pick the method that fits your truck and follow along.

La Cucaracha Dixie Sniper
2 wiring methods
About 30 to 45 minutes
La Cucaracha, Dixie, and Sniper install

Two ways to wire it

Same horns, same compressor. Pick one.
Method 01 Easiest

Honk from the steering wheel

Uses the included relay harness. Your factory horn button triggers it, so it honks just like stock.

Jump to Method 01
Method 02 Custom switch

Run it on your own switch

Trigger the horn from your own push button or toggle switch instead of the factory horn. Add our electric horn wiring kit and wire it up with Method 02.

Jump to Method 02
What you'll need

Grab these before you start. Your kit already includes the rest.

Wire strippers & crimpers
Crimp connectors (ring & butt)
10 ga & 18 ga wire (Method 02)
Socket or wrench set
Test light or multimeter (optional)
Heat shrink or electrical tape (optional)
A clean, bare-metal ground spot
In the box: relay harness, relay, fuse holder, and your horns.
Wire legend
Red
Main power, battery (+)
Yellow
Relay output, compressor (+)
Blue
Trigger (+)
White
Trigger ground (–)
Black
Ground (compressor – / chassis)
Method 01 Easiest · most popular

Honk from the steering wheel

Uses the included relay harness. The separate black wire grounds the compressor, and your factory horn button (or a push button) triggers it through the harness.

1
Ground the separate black wire
Connect the separate black wire to the (–) terminal on the bottom of the compressor, then ground it to clean, bare metal. This wire is independent of the relay harness.
2
Set your trigger (pick one)
Factory horn button: white wire to factory horn ground (–), blue wire to factory horn positive (+).
Push button or switch: white wire to a clean chassis ground (–), blue wire to the button's output, then the button's input to a +12V source.
3
Connect the relay output
Short yellow wire to the (+) terminal on the bottom of the compressor.
4
Bring in main power
Long red wire (with the inline fuse) to battery (+), or a 12V source rated for 20A.
Method 02 Custom switch

Run it on your own switch

Want the horn on its own push button or toggle switch instead of the factory horn? Our electric horn wiring kit has everything you need. Pull the relay out of the harness and wire its four numbered pins as shown, matching the stamped numbers to the diagram.

Shop the electric horn wiring kit
1
Pin 30 to horn (+)
Run a 10 ga wire from pin 30 to the (+) terminal on the electric horn.
2
Pin 87 to battery (+), with the fuse
Run a 10 ga wire from pin 87 to the battery. The fuse holder is a closed loop, so cut it at the midpoint and strip both ends. Connect one end to battery (+) and the other to the pin-87 wire.
3
Pin 85 to ground (–)
Run an 18 ga wire from pin 85 to a clean chassis ground, or straight to battery (–).
4
Pin 86 to trigger (+)
Option A: connect to the OEM factory horn (+) wire, so it honks from the wheel.
Option B: connect to one side of the push button, and the button's other side to a +12V source.
5
Install the fuse
Drop one 30A fuse into the holder near the battery.
Test it
Honk from the steering wheel (Option A) or the push button (Option B).
Troubleshooting

If something's off

No honk at all

Check the inline fuse first. Then confirm your ground is on clean, bare metal, not paint.

Weak or no air

Make sure the compressor terminals aren't reversed. Yellow output to (+), the black wire to (–).

Honks nonstop

The trigger wire is seeing constant +12V. Recheck the white/blue (or pin 86) trigger wiring.

Relay clicks, nothing happens

On Method 02, verify pin 85 (ground) and pin 86 (trigger) aren't swapped.

Stuck mid-install?

Our Tampa crew wires these every day. Send a photo of your setup and we'll point you the right way.

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