Best way to feed wire through your firewall

Just looking for opinions. For all of you who have installed ditch lights, light bars etc how did you run the wire through the firewall to a switch in the cabin? Did you use any kind of fish tape?

 

Coat hanger

 

I cut a hole in the boot. You can seal it but if you plan on running more wires in the future just leave it be. It’s not really an issue. Just make a small incision and squeeze the wires through with a coat hanger. It stretches.

 

There's a rubber grommet/hole on the driver side where some wires were already fished thru, i just took a metal hanger and made the hole a little bigger and used that as a pipeline for other wires, careful not to damage any of the other wiring

 

No need to cut, bend a coat hanger straight and tape it to that. Push through about two inches and then pull from cabin side.

 

I didn’t use a coat hanger, its a short run. Guess it depends on the gauge of wire. I sprayed everything with windex and pushed it through the grommet, pulled it from the other side.

 

This ^