Firewall penetration options?

Gris · **Posted:** Thu Dec 14, 2006 2:19 pm

Does anyone know anywhere to get through the firewall besides here....

http://home.comcast.net/~corwyyn/firewa ... ation.html

That hole is being used to run a piece of 0 gauge and has absolutely no room left to get the power wire from switch/relay to the fog lights I want to install.

corwyyn · **Posted:** Thu Dec 14, 2006 2:59 pm

Up behind the glove box on the passenger side is an identical opening:

Don't know if you're wires are long enough to go thru that one but its there. Worst case scenario, you push them thru the boot around the main wiring harness like a lot of other people have done.

Gris · **Posted:** Thu Dec 14, 2006 3:37 pm

down in the foot well like the other side or do I need to remove any of the trip that's part of the dash/glove box?

Length isn;t an issue. I can just solder my own set of wires if I have to.

corwyyn · **Posted:** Thu Dec 14, 2006 4:01 pm

Its up in the foot well like the other one. The trim you'll have to remove is the kick panel on the side of the foot well (just like for the other one) and probably the piece that covers the bottom of the glove box/heater area. In the extreme upper right corner of my picture above you can see the connection for the radio antenna, so that'll give you an idea where to look. Took a quick look in thru the engine compartment and it looks like you'll need to go in behind the A/C condenser, there is a bit of insulation on mine back there. Good luck!

moose · **Posted:** Thu Dec 14, 2006 5:18 pm

man do i need a vacation. i read the topic and was getting ready to talk about how to penetrate firewalls - the computer kind. by the gods, it's a good thing x-mass is coming up....

Gris · **Posted:** Thu Dec 14, 2006 6:23 pm

Thanks for the tip corwyyn!

moose, take yourself a vacation.

I ran a 0 gauge wire into the cab and put it into a distro block with some ANL fuses. I run my on-board air, 3 sets of Hella FF75 55Ws, 1 set of Hella FF75 100Ws, and 1 set of eBay special 130W fogs off the block.

Only problem is that the 0 gauge completey fills up that hole to the point where I didn't even need to seal it off for water-tightness. This means that the main power wire to the fogs on the front bumper can't go through the hole. It should be easy enough to ru them to the other side of the cab. Also, I have no ABS, so that area should be pretty clear in the engine bay.

The wires for the FF75s go up the A-Pillar since they are on the roof rack.

unixxx · **Posted:** Thu Dec 14, 2006 11:06 pm

I drilled a second hole next to the clutch hole, coated it with rust inhibitor, and then Gooped in the cable.

sqliberty · **Joined:** Sun Mar 19, 2006 3:08 pm **Posts:** 207

I ran my 0 Gauge underneath to the back and up through the floor in a watertight grommet to a distribution block. Mine is for all the stereo gear though not for my lighting.

Gris · **Posted:** Fri Dec 15, 2006 12:24 am

sqliberty, where is that first pic?

Got anymore. I'm not sure what you meant by "underneath to the back".

You have the 0 going all the way to the cargo area under the truck?

Where does it go in at the back?

***EDIT***

I checked out your page. That's a sweet setup man!

Where does that huge ground wire terminate?

sqliberty · **Joined:** Sun Mar 19, 2006 3:08 pm **Posts:** 207

Thanks, I have spent a lot of time on the system. Yes I ran it all underneath. I have it running through heater hose where it is close to the exhaust for adde protection.That grommet goes throgh the floor in the cargo area in front of the gas tank and the Ground termination is close to that as well, but inside the car. I just sliced a flap in the carpet to access the floor. I will see if I have any better pics.

hyedipin · **Joined:** Thu May 11, 2006 10:20 am **Posts:** 1667

Does anyone have a picture of their set up with a factory battery & any kind of amp, pulling power via any hole with appropriate gauge cables..
I am hoping to get subwoofer and I would like to see what I would face as far as getting power from the factory battery to amp, which might be back in cargo area. From what I see, the amp installation sets with fuses, those cables are pretty thick..

unixxx · **Posted:** Sun Dec 17, 2006 4:21 am

I didn't take any pictures of the installation process but have some of the somewhat unfinished product:

The supporting components:

Professional electrical taping job; the solder joints ARE actually nice:

"Temporary" line level jumpers; I need to make some nice short ones:

Car PC and signal cables that need to be shortened; I just hate trimming wires that run through the entire vehicle:

Fuse and distribution block and overkill 12AWG speaker wires; using old stuff was cheaper than buying new stuff:

50A Circuit breaker with two 6AWG tinned marine cables; this part worked out well:

Firewall penetration using clutch hole, new hole, tubing, and goop; this part also worked out well:

There's a good factory grounding point under the carpet below front of the rear left seat. By the way, if anyone has any tips on making car audio installs look pretty, please do tell. I think I'm going to build a false floor over top of all the components.

sqliberty · **Joined:** Sun Mar 19, 2006 3:08 pm **Posts:** 207

unixxx wrote: