Ways through firewall

[Pax1]

Got a 95 Chevy Beretta Z26 and ive been trying to install a sound system. Having lots of trouble finding a way through the fire wall for a power cord. Anybody know where the grommets are? Ive tried going through a grommet in the top left of the engine bay but didnt see anything on the inside after taking off some panels. Any help is appreciated!

[woody90gtz]

Best bet would be a bulkhead. I just used these for my car. Drill a hole and use an o-ring to seal the hole.
https://amzn.to/4ajxMrp