hey guys i am wondering were u ran your power wire threw your firewall at? i ran mine threw the same whole the antenna goes threw on the pass. side. i had to pull the grometand pass it threw. i just used some duck tape aroudn the hole to seal it with the gromet jammed in place. does any suggest anything better? thanks

 

I found room to drill a hole under the heater box. I ended up doing what you did though but a little bit different. I got an invisible antenea kit from Radio shack and got rid of the antenna wire going through that grommet. I got a new grommet and used that for my 0 awg power wire. I didn't feel like drilling a hole that big under the heater box.