I have a power wire for my sub amp running through the firewall, it's easy. Just look for an open spot, find a grommet that fits the wire and your hole, slip the grommet on your wire and then run it through the hole.
1992 Cherokee Laredo - all stock, DD. Needs some minor rust repair, then on to the mods!
1996 Cherokee Classic - 3.5" lift / 31.0x10.5 Mastercraft Courser CTs / Warn XD9000i - Stripped for parts / junked :(
2004 Grand Cherokee Laredo - 4.7, bone stock - Wife's DD
NJ F-Body Owners Association