Getting through firewall??

Trying to wire my PA system to my CB and need to get through the firewall. anyone done this already and what's the easiest way to do it

 

There is a small rubber plug that can be removed to gain access. It is up behind the glove box.

 

thank you, can't find it but will keep looking lol

 

found the plug, pushed the wire through, can't find the wire. lol

 

You might want to run that wire through the grommet. It'll protect the wire from chafing, and keep water out of the cab.

 

how would I do that?? very new to trucks and wiring lol

 

cooler man, do I need to make a hole through the gray carpet material to push the wire through??

 

You could make a tiny cut (ideally smaller than the wire going through it) and in the case of that particular grommet, push it through. I normally would use a thing called a "fish tape" (at least a piece of one). The end of those are sharp enough to poke through rubber. Tape the wire to the other end, and pull through.

You could probably just push the wire through the one your looking at though. You want the hole to be smaller than the wire to keep the seal. Obviously the rubber will stretch enough around the wire to let it pass through. if it's too tight, put some silicone (a tiny amount) on the wire before it gets pulled through. This will lube the wire, and further seal it.

 

Yes

 

I use a metal hanger to get through the grommets and then seal it with liquid electrical tape. I ran power for a ham radio through the driver's side grommet and the wires for a power tailgate lock through the passenger's side. The hanger makes it easy, but it helps to tape at least six inches of wire so it doesn't slip.

 

thank you all, got it working ended up going through the plug under hood.