OK, so I'm trying to run the power wires thru the firewall and I'm having a hard time. There is an existing hole thru a rubber grommet in the firewall thru which the aftermarket car alarm was wired. I tried to use this same hole to run the wires. I took a coat hanger and made it straight, then ran it through the hole from the engine side into the cabin. Then in the cabin I used electrical tape to secure the wires to the end of the coat hanger. I tried pulling the coat hanger back out so that the electrical wires would now have been thru the firewall and in the engine bay. Everytime I try this the wires fall off the coat hanger because the hole in the grommet is too small. I would try enlargening the hole, but I cannot get access to it because there are so many other wires and things in the way. Is there another way to get the wires thru besides drilling a hole in the firewall?