Originally Posted by jikhead

Not sure if you're referring to the person who posted the video or my comment, but...

The small grommet that is behind the battery, I can't remember if it's visible as is. You may have to remove the passenger side cowl to see it. But you definitely need to remove the cowl and battery to run the wire. After removing, it's a bit tricky to get the grommet out. I used a small-tipped flathead screwdriver to get the grommet out. I then "scored" the center of the grommet in a pattern like so - * - so that the power wire would go thru the grommet and at the same time keep a very snug and water-tight seal. Now the hole in the firewall has about 1/4" insulation on the inside. I took my longer philips screwdriver and poking it thru the material. You have to use quite abit of force to force it thru. Once done, you can then feed all the power wire thru to the inside, replace the grommet back on the firewall, replace battery and cowl.