Finding a place to go through takes a small bit of time and a little looking around. In most cases, you will end up drilling on the driver's side and the easiest way to drill will be to come through from the inside of the car. I would highly recommend using a "unibit", or otherwise known as a stepdown bit. The reason is that these bits cut through gradually and enlarge the hole in small increments. You can do the hole with a normal bit but b/c of the typical length of a normal bit, it may be difficult… not to mention the fact that once the bit "grabs" the sheet metal of the firewall, it will pull through quickly if you arent careful. I've seen that happen and result in knicking hoses and wires in the process.

If you can imagine the point at which the steering column runs through the firewall as being the center of a clock, in many instances, the point that you would drill through would be anywhere in the proximity between 8 and 11, in that general range. Just take your time, look at it from both the inside and the engine compartment.

Now, you can sometimes find an opening, usually a rubber grommet that is not being used. Fords are known for having these and if yours does you can usually pop it out easily and cut a small X in the middle with a razor blade or razor knife. This will allow your wire to go through easily. I do not recommend cutting through the steering wheel grommet or going through door jams as this is not only unprofessional and unsightly but also increases the chances of damage occuring to the wire, thus leading to a short.

If the battery is on the passenger side, find a place to run through is a little more tricky than the driver's side but it's not impossible. Usually, you have to go below the heater core box or the AC blower box to go through.

Remember to use a plastic or rubber grommet if you drill through and to use loom under the hood. The loom will look better and will protect the wire against things that possibly could happen (though I havent seen anything occur that a piece of plastic loom would prevent).

Unless someone has a photographic memory, I mean REALLY photographic, any installer will likely tell you that they would have to see the car before they can specifically say where to drill through. And, to find the spot, they would have to do what I just stated. So, try that and run with it. You can do it, it's easy, just take your time with it.

I'm open to emails so if you have any other questions, send an email: fosgate3@yahoo.com

Get hubcaps with spinners instead. And plenty of prophylactics in your glove compartment.