I tought I would share my Stebel Nautilus Compact horn replacement install for anyone interested. It is a hundred times louder then stock, and was done after being run off the road into oncoming traffic by idiot with loud music. Took a bit longer then planed as the 5th gen is very lacking of room for the unit whole. I had to remove the compressor from the horn body and fit them in different places. Compressor location: Horn location: Relay location: Make sure you install a 20A fuse and 4mm cable to supply and use the relay, the original wiring is too small to run this horn and is only used to activate relay.