Looking for a new car stereo

[NifT]

In fact the only time I've got a 'pro' to install some audio equipment in my car was a sub-woofer and that was mainly because I couldn't work out how to run the power cable through the firewall.

Generally, I just look for an existing hole near my battery, and widen it just enough (if necessary) to run the cable through with whatever else is using that hole. I found the harder part to be figuring out which pieces of trim to hide the cable under when running it to the trunk.