I've tried everywhere imaginable to fit my 45w horn on the blazer...no room. Only spot was downward facing behind the bumper, near the tow hook. I mounted my radio to the underside of the ash tray as I'm a non smoker. You can get fancy and mount it in the console in place of the CD holder.

 

yamine is in the console tray, i was gonna mount it on the ashtry but isnt it too heavy for that?

 

Yea it kept falling down, so I just put 2 screws in the side of the tray, and that holds it up in the compartment.

 

that works lol

 

I have a 100 watt speaker mounted on the inner fender under the battery tray. My siren/pa is mounted under the center console and I extended the wires for the 5 buttons to my switch box with the rest of my fire dept equipment