i cant seem to find a place to put my power cable to the inner part of the car.i dont seem to find a decent place to drill a hole to or the firewall i think its what itscalled, im using a buick regal 1992.... i was thinking of putting it through the door, is that safe?is it done sometimes or not recommended at all?
I've gone through the door with 6 gauge wire, I wouldn't recommend this at all, but especially with anything larger than 6 gauge. It didn't really let any water in at all, but I must have gotten lucky, I've heard a bunch of horror stories with that. I'd say just look harder or if absolutely necessary, go through the floor, but make sure to seal it up good. Note: I was running a 450 watt amp at the time I had the 6 gauge wire, now I've got a 1000 watt mono amp with 0 gauge wire running through the firewall :-)
Pull the carpet up in the front passenger cabin and you should see a plastic grommet somewhere low along the firewall that you can slip it through. That is where your factory wiring is run into the car but you can usually find enough room to slip one more in.
