Electric "Highway" Horns

After literally being run off the road by the driver of a fully loaded pick-up truck who didn't even know I was there and couldn't hear my puny little Miata meep-meep horn, I decided to fix THAT problem.

I bought a set of Wolo Model 125 Dominator Electric Horns. These horns produce up to 125 db. and while they are usually found on boats, they will work just fine on my Miata.

Installing the Roadmaster towing baseplate positioned a square crossbar running side to side across the front end. This crossbar (pictured above the left horn trumpet) made an ideal platform from which to hang the dual horns..

The horn trumpets are pointed slightly rearward so that rain blowing in the grille will not flow into the horn trumpets. Remember, these horns are electric and there is no air to blow water and debris out.

I installed 2 horn relays.

Relay #1) When the ignition is OFF, this sends power directly from the battery (not through the rest of the electrical system) to the stock meep-meep horn when the steering wheel horn button is pushed. This is the default state of the Miata horn.

Relay #2) When the ignition is turned ON, the relay switches from the stock meep-meep horn to the trumpets which are then connected directly to the battery. The trumpets are "armed and ready" whenever the key is on.

Wiring the horns this way the keeps the door lock confirmation beep from blowing us away or waking the neighbors.

The chrome horns are visible through the grille opening.
Next time I'm in there, I'll paint them black.

They are not the fog horn on the Queen Mary, but they are VERY LOUD!

My Miata has gone from "Can you hear me now?" to

Click on to hear the horns