..I mounted two Stebel horns, one on each side of the radiator..straight plug and play into the double horn relay kit from our friend at Eastern Beaver, which plugged into the 3 circuit solution he sells..the headlight relay plugs into it also..
..I used the Twin TM-80 model (electromagnetic) whereas the Stebel Nautilus is electropneumatic (air)...they sound like a bus horn..I've scared the bejesus out of more than one cell phone talking, land drifting, non driving SOB..

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..and no matter which aftermarket horn you use, you should use a relay..and if you buy Stebel, make sure you get it from a reputable dealer that has the real Italian made horns..there are a lot of Chinese knock offs out there that masquerade as Stebel..
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