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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
The Stebel Compact Nautilus, which I'm running, seems to be the same unit as the Wolo but with fewer cute stickers affixed to the Compact Nautilus. It moves the deer and elk off of the highway just fine so far, and I'm thinking of adding a second one to see if it makes for more pellets on the highway when they skedaddle. I also tested it on a few aggressive drivers in Las Vegas, and it made the desired impression upon them, too.
I've got mine tucked up behind the bumper, with an L bracket bolted into an existing hole in the lower crossmember (in front of the radiator) which I tapped. I snagged the relay coil power with a parasitic tap on the stock horn wiring, leaving the stock horns connected, and brought power to the Nautilus relay contacts directly from the battery with an inline fuse holder on the B+ side. Installation, including wrapping the wiring up in flex conduit and routing and anchoring it nicely, took about half an hour.
Most of the cheap air horns are too high pitched for me. I got some horns from a couple mid-90's Cadillacs from a junk yard for $10. I hooked the horns up to a relay and the stock horn wires activate the relay. The horns I have are four different notes so there's a good blend of high and low pitch. I had to make a bracket out of some scrap metal to mount them but that was pretty easy since there were already threaded holes in the engine compartment just waiting for something to be put there.
You can see the old air horns below them that sucked because the were really high pitched.