How To get Wiring thru Firewall - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > Speciality Forums > Electrical
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Advertise

Electrical Discuss anything related to OEM & aftermarket electrical devices including: stereos, speakers, video, batteries, starters, the body control module, lighting, etc.

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 08-18-2019, 02:46 PM   #1 (permalink)
denandannie
Heat Sink
 
Join Date: Dec 2014
Posts: 11
iTrader Score: 0 reviews

How To get Wiring thru Firewall

I am installing a Rough Country EXO winch bumper that comes with an LED bar. I intend to wire to one of the batteries and then route to the dashboard.

My question is: how do I get the wire thru the firewall? Do I drill a hole? If so, where and how big?

Thanks

__________________
2015 3500 4x4 LB CB Duramax LML
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-18-2019, 02:53 PM   #2 (permalink)
davester
Diesel Prodigy
 
Join Date: May 2015
Posts: 4,171
iTrader Score: 0 reviews

I would suggest trying to get it through one of the existing grommets. Might be easier to push a rod through, then put a hook on the rod, then pull the wire through using the hook on the rod.


If you do drill a new hole, first find a grommet that fits the wire snugly, then drill the hole to fit the grommet. This keeps engine fumes/exhaust gasses out of the cab and prevents the wire from rubbing through and shorting out against the body.

__________________
2004 GMC Sierra 3500 C&C, added 4WD, 6.0L gas, Extended Cab, SLE, Transgo 4L80e-HD2 kit installed
Whee! Dually Club Member #1109
Offline   Reply With Quote Quick reply to this message
Old 08-19-2019, 07:33 AM   #3 (permalink)
Rvn4me
Diesel Pro
 
Rvn4me's Avatar
 
Join Date: Jun 2016
Posts: 2,177
iTrader Score: 0 reviews

Michigan Oil Burners Member

Most people with the LML go through the floor board on drivers side where the e-brake cable comes through.
And the bundle below the brake cylinder.

2011-2016 DSP5 Switch install
Step 7. To fish through the firewall. (We use the hood latch release cable hole to fish the wire through to get inside the cab. (Pushing the hood latch release cable grommet in using your fingers will allow for enough room to run your wire through the firewall into the driver’s floor board. A flash light will be handy. Also we removed the fender support bracket for easier access)

Google “duramax LML Firewall access for wires” or something similar. Lots to read

Last edited by Rvn4me; 08-19-2019 at 07:59 AM.
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-19-2019, 07:47 AM   #4 (permalink)
cwq21
Diesel Boss
 
Join Date: May 2004
Location: Port Allen, La.
Posts: 1,388
iTrader Score: 0 reviews

Quote:
Originally Posted by Rvn4me View Post
Most people with the LML go through the floor board on drivers side where the e-brake cable comes through.
I did the same thing on my L5P when I wired my aux. fuel tank solenoid and my rearview camera for my 5th wheel. When I was done, I used RTV on the hole in the boot...
__________________
2018, 3500, SRW, LTZ, Z-71 4X4

Passed down to my son - '03 Silverodo LT, CC, D/A, 4X4, Hypertech, Rino, Bilstiens, TTT's. Eric's pump upgrade, 4" MBRP exhaust, AFE Intake.
2015 Camaro SS2
'06 Mobile Scout 31 BWFS 5th wheel

Owner @ Port Allen Tire & Service
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 02:31 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide