Running wire through the firewall...

... how many "reasonably accessible" places are there for a wire pass-through?

I've used the easy-to-find one, in the area behind (ahead of?) the brake pedal and fuse box. I need to run another cable (three wires) through, and I'm wondering if there are more pass-throughs that are as easy to deal with as that one.

Anyone got guidance to give? Thanks, all.

 

You have two main options:

Passenger side grommet:

https://www.youtube.com/watch?v=94yyWXuUDC4&t=72s


Drivers side grommet:

https://www.youtube.com/watch?v=AF4FpuLROwc&t=1s

 

Thanks, BL!
I've used the one JP shows on the driver's side. There may be room still to get this cable through, but I'm trying to make a Plan B before I get started.

 

I used the rubber grommet where the harness passes through. There's a "nipple" on the grommet I sliced to feed my auxbeam cable.
I'm saving the one shown in the video above when I decide to run a power cable to the trunk for an amp/ subwoofer set up.

 

The grommet you describe on the driver's side behind the fuse box is large enough to get multiple cables through. I've passed a PL-259 antenna connector through it, albeit tightly, and with Windex on it as lube. That's about 1" diameter.

 

The rubber grommet. Here is a tip though. Take a long screwdriver and push from the engine bay inward. Push hard. You have padding on the inside you need to clear out of the way. My grommet hole was covered with padding. Simple push with flat base screwdriver cleared it out.

 

I used the D/S punch a hole W/scribe then pulled 0.041 SS safety wire through. Made a "J" hook wrapped pwr wires for Bright box Anytime driving lights & for Raptor lights. wrapped like a bullet W/electrical tape, DC-4 & grabbed W/pilers inside pulled all through, then smeared some black RTV on Eng. side of fire wall grommet.

 

The nipple on the wiring harness is large enough to pull a 6awg cable through without issue. You can get a standard 15mm or 5/8" wire grommet in the larger hole with 4 awg or even 2 awg. Un-split corrugated loom is also really good if you are just running a few wires and want it better sealed.

This dude is king when running through the larger hole. Punched through the inner rubber liner like butter. Just punch through from the outside, run your fish wire, remove the tool, and pull whatever through.

$12 Performance Tool W2935 Stainless Steel Wire Insertion Tool - Piercing for 1/4" Wiring Hole

https://www.amazon.com/gp/product/B073WZCL8Q

 

Thanks for this

 

This^

https://www.4runners.com/threads/are-there-additional-firewall-wiring-pass-thru-locations.36182/
And here, thread w/ 85 comments

 

Thank you all! And thanks dj for the link and videos.

I've got some work to do this weekend... :^)

 

The big grommet that is on the drivers side is a great place.

 

When I installed a front facing camera, had to run the wire through the grommet on the passenger side. It’s easy to see under the hood, low on the passenger side. I made a slit with a razor; very nerve wracking! Using a wire fish (fish tape) is a must.

 

This is what I did to install my ditch lights. Fairly easy to do just tight space. Firewall had little nipple I cut off then snaked my wire through (watch around 9:48)
https://www.youtube.com/watch?v=ujyzM1jahjI