guys im a voly firefighter i want to install a siren speaker and amp control box in my engine compartment behind my grills and hook up the siren controls inside the cabin of the car...is there any way i can do this without drilling a new whole in the firewall? and if u guys could tell me a good spot to put the siren conrols to make it look nice that would be awsome.
thanks,
Jon

 

I don't know there is any other way but these two threads show one way. I just installed new amp and ran the 2 guage wire from battery to trunk following the instruction in the thread. Good luck.

https://g35driver.com/forums/audio-v...se-system.html

https://g35driver.com/forums/audio-v...g35-coupe.html

 

^That's actually rly helpful, hadn't seen that before

 

Find a rubber grommet that goes from the cabin to the engine bay(probably one by the battery). Poke a hole in it and seal it up with RTV after you're done.