firewall opening on 2003 accord coupe

[Yourname]

Doe anyone know any openings on the car's firewall that would allow me to
run the power cable from my speaker amplifier to the battery?

 

[mtb2k2]

look for an existing grommet and run your wire along side the wires that are
already there

 

[Chip Stein]

look for an existing grommet and run your wire along side the wires that are
already there

buy a grommet and make a hole the right size. i've seen a lot of amp
wires run through the ecu grommet hole and they are such big wires
that the grommet doesn't seal. then the water runs down the wire and
usually right into the ecu.
this mostly happens with aftermarket stereo shops.
Chip