Jump to content

Tricks for running wire through firewall?

CamJake
 Share

Recommended Posts

CamJake Enthusiast

CamJake

Posted
Posted

Where is everyone running wires through the firewall on their '14s? Access is very limited under the dash. The big harness on the driver's side would be nice but I couldn't find where my snake poked through. I'd like to avoid drilling a new hole.

Sierra706 Senior Enthusiast

Sierra706

Posted
Posted

Where is everyone running wires through the firewall on their '14s? Access is very limited under the dash. The big harness on the driver's side would be nice but I couldn't find where my snake poked through. I'd like to avoid drilling a new hole.

There's a big rubber grommet next to the steering column. Cut the nipple protrusion and fish your snake thru. It will come out above the parking brake

 

 

Sent from my iPhone using Tapatalk

  • Like 4
CamJake Enthusiast

CamJake

Posted
  • Author
Posted

There's a big rubber grommet next to the steering column. Cut the nipple protrusion and fish your snake thru. It will come out above the parking brake

Sent from my iPhone using Tapatalk

Thanks, that's the grommet I was looking at. I'll give that a shot
  • Like 1
Maxsuperdog Enthusiast

Maxsuperdog

Posted
Posted

Unbolt the black box next to the parking break and you'll have just a little more access to it.

  • Like 2
pgamboa Senior Enthusiast

pgamboa

Posted
Posted

Thanks, that's the grommet I was looking at. I'll give that a shot

Be careful coming in... go slow. It helps if you have a 2nd person on the footwell side to see when it comes through. I did mine solo when I installed the Kicker VSS system (needs power ran to the battery).

 

If you feel resistance or hit a wall, you're probably hitting the back side of the X61A Junction Box. That's the box with the black cover mentioned above... next to the E-Brake.

 

If you're using something like a coat hanger, put some electrical tape on the tip to protect and wires as you come through.

 

Good Luck!

 

 

Sent from my iPhone using Tapatalk

  • Like 4
slee3247 Enthusiast

slee3247

Posted
Posted

I ran it through the grommet next to the steering column as so many others have with no issues whatsoever. Now my music is rocking :nopity:

  • 2 months later...
thatryan Enthusiast

thatryan

Posted
Posted

Ha just google and came to this thread. Been trying to get my kicker power through that grommet for an hour now. :(

Sierra706 Senior Enthusiast

Sierra706

Posted
Posted

Ha just google and came to this thread. Been trying to get my kicker power through that grommet for an hour now. :(

Unwind a metal clothes hanger

 

 

Sent from my iPhone using Tapatalk

chrispassas21 Enthusiast

chrispassas21

Posted
Posted

I've tried too and could never get it through

 

 

2015 1500 LT Silverado Midnight Edition

Sent from my iPhone using Tapatalk

cmysstailights Enthusiast

cmysstailights

Posted
Posted

On passanger side there is a nice spot. Takes a little to get threw but works. Found it on this site, that's were I ran my power and ground

 

Sent from my SM-G935P using Tapatalk

Maxsuperdog Enthusiast

Maxsuperdog

Posted
Posted

On mine there was another grommet within the bigger grommet. Once i removed it from the inside i had no problems getting O gauge wire thru. Unbolting the black box will give you just a little more room to get in there.

L86 All Terrain Senior Enthusiast

L86 All Terrain

Posted
Posted

The grommet will self seal tight to your wires, i taped my wires onto a sharpened piece of coat hanger and made a new hole beside the wiring harness to avoid poking a wire in the harness. Still tight as a virgin after 2 years.

  • 4 months later...
CheeseHead...WI Enthusiast

CheeseHead...WI

Posted
Posted

I cannot for the life of me get through the firewall.....I cut the little access hole by the drivers side, moved the black box, even was desperate and asked the wife to push the wire in. I hear it, just cannot find it. 

I am no contortionist to get my fat a$$ under the dash, so this is really make me mad. This is all I need to complete my 30” rough country led bar and x2 8” led reverse lights.

Sierra706 Senior Enthusiast

Sierra706

Posted
Posted
I cannot for the life of me get through the firewall.....I cut the little access hole by the drivers side, moved the black box, even was desperate and asked the wife to push the wire in. I hear it, just cannot find it. 
I am no contortionist to get my fat a$$ under the dash, so this is really make me mad. This is all I need to complete my 30” rough country led bar and x2 8” led reverse lights.



Try a metal clothes hanger


Sent from my iPhone using Tapatalk

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      Correct way to service 2024 l8t allison trans?

      By Chuck FB · Posted

      That should answer the maximum depth difference between the stock and the PPE so its not hugely lower. As to the PML pan, they don't make any claims that it fits the L8T with the same transmission and in fact leave their information confusing, however on the surface it says "for Duramax" and so its hard to say. I know a while back and not sure which brand it was that specifically stated that the extra capacity pan that particular company made did NOT fit the gas version. 
    • fondupot
      Installed Bilstein 5100's on my 2024 2500HD - Worth it - VIDEO + GIVEAWAY Inside

      By fondupot · Posted

      There are several versions of the 5100's. Some for stock height, some for leveled, some for lifted.    Side note. I finally had a chance to tow with my 30' gooseneck with about 10,000 lbs of material on it this past week. Hands down the 5100's made the trailer towing much more stable and comfortable. I even had 10 cmu blocks in the bed. What a difference over the stock shocks. 
    • Tyler Gibbs
      Correct way to service 2024 l8t allison trans?

      By Tyler Gibbs · Posted

      According to PML, the stock pan is 4.3" deep - (PML info): Dimensions: at deepest area, PML pan is 7 inches, stock pan is 4.3 inches    PPE is 5.4" so roughly 1.1" deeper than stock
    • Chuck FB
      Correct way to service 2024 l8t allison trans?

      By Chuck FB · Posted

      I had not realized that PPE has come out with a version of a cast aluminum oil pan specific to being able to fit onto the 10L1000 with the L8T engine sometime this spring. I was doubting that anyone would come out with something beyond what Dorman had in more of a direct factory pan swap. I see from one comment that is on the PPE site that they found the pan to be tighter to install then the factory unit and having to flex the exhaust down to fit it. I didn't lookup any specs if they have any as per how much lower it hangs but as it holds more oil and has fins outside the pan it would no doubt hang a certain amount lower.    I looked back at the site and they do have some depth measurements to get a rough comparison to the factory pan total height or hang down if you will at the front and rear of the pan so that will give a good idea how much further down this pan would end up being for ground clearance issues.    2024-2026 GM 6.6L Gas 10L1000 Heavy-Duty Cast Transmission Pan – Pacific Performance Engineering    
    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      I'm in constant amazement over the number of people that do oil maintenance by how they feel, what they were told, what materials cost, what brand A claims vs brand B.     Come to think of it, this behavior isn't exclusive to oil. 🤔 They drive this way too. 😬   There is a 20 plus page thread on BITOG on Mobil 1 Advanced Clean vs Valvoline Restore and Protect it would be amusing if it were not so........humanly pitiful.   Last Sunday we were are sitting at services and listening to a speaker talk about Jesus parable of the wide and narrow gates and he said something that hadn't dawned on me but totally fit the way people in general are about just about everything. He said there are so few people on the narrow path leading to a good reward not because the the narrow gate was hidden or hard to find but because the wide gate leading to a bad end it so darn easy and uncomplicated to follow!!!             

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...