Any of you install this? I am using the Whelen SA315P100 watt speaker too. I am not going to wire directly to the horn ring but to a seperate momentary switch (I think).

Just a few questions.

Should I get power directly from the battery or some other power source?

Does anyone know the proper speaker bracket to use for a 2007 Classic?

What is the best location to mount the amplifier box?

Recommendation on where to run the wires through the firewall?

Thanks for any help.

Hey, not sure if you ever installed this but I just came across the thread, I wouldnt go thru the fire wall at all, I went the the rear wall behind the seat on a few trucks and it works great. I mount all the electrical boxes mostly here except the switch box of course, they go in the dash or the roof console as I have mine.