Where to run wires through firewall?

[Lieney]

Agree with grimace. I ran several wires through the same hole. UHf, driving lights, extra power wires etc. There is a relay on the inside of the wheel arch, 2x 8pm bolts I think hold it in. Makes it easier getting hand down there.
A mate told me to use a piece of broken antenna & file one end, push it through and feed ya wire through. Wish I did this before. Coat hanger worked well but

[Winnie]

A nail or screw works just as well, just tape it to the wires.

[gbab01]

Another plus for the Grimace location. I have used it for numerous items. I use a piece of stainless wire cable left over from building the deck. Heaps of room and no drama but you may have to take the kick panel off (one screw).