Sponsored

Running wires from the engine compartment to interior

@californiajeeping

Well-Known Member
Joined
Apr 1, 2020
Threads
16
Messages
922
Reaction score
933
Location
California
Vehicle(s)
2022 Jeep Gladiator diesel, 1977 cj5 LS swapped
I'm definitely just going to use the drivers side one myself after reading all this
Sponsored

 

Bbannongmu

Well-Known Member
First Name
JTR.Spartacus
Joined
Jan 18, 2020
Threads
26
Messages
1,879
Reaction score
2,159
Location
Earth
Website
m.facebook.com
Vehicle(s)
2020 Jeep Gladiator Rubicon
Build Thread
Link
Occupation
Certified Emergency Manager
Vehicle Showcase
1
I went through the passenger side grommet has in my manual JT for Zautomotive. Didn’t need to remove anything. Just laid on the ground, pulled the fender liner back a bit and reached up to the firewall grommet
 

Strider62

Well-Known Member
First Name
C.B.
Joined
Aug 20, 2019
Threads
1
Messages
93
Reaction score
280
Location
Virginia
Vehicle(s)
Audi A5; Gladiator Overland
Realizing I'm WAAAAAAY late to this discussion, but just thought my own experience might be helpful for other noobs like me.

I wrestled with that plug for about 15 minutes, couldn't get good purchase on it from either side, especially since I thought I needed to twist it to unlock it... (You don't.)

So I sprayed just a little bit of WD40 on the edges (interior and exterior) and it popped right out when I pushed it with one finger (from the foot well side).

You can see in the image below the two tabs that actually hold the plug in place (marked with yellow arrows). You should be able to see these tabs when you stick your head into the footwell and look up there. You can see in the second photo that the tabs are cutouts in the circular wall of the plug.

Presumably, you could just pinch the tabs and push the plug out, but it's probably easier to just spray a little shot of WD40 onto those tabs and you ought to get the same result I did - an easy one-finger push and the plug was lying on my driveway.

If you can't see the tabs, look for the numeral "3" stamped into the plastic of the plug (in the yellow circle in the image below). It should be at the six o'clock position. The tabs are at 90 degrees around, right and left, from the "3" (in other words, they should be at the 3 o'clock and 9 o'clock positions).

The flanges on the plug that look like screw threads (and made me think I needed to rotate the plug to get it out) don't serve much purpose other than to align the plug with the flange cutouts in the firewall through-hole.

I guess the moral of the story is "don't overthink it!"

From here, I plan to drill out a small hole in the plastic plug and use a rubber firewall grommet to protect the wire I pass though it, and to help seal up the hole.

Jeep Gladiator Running wires from the engine compartment to interior Firewall Plug - Driver Side.JPG


Jeep Gladiator Running wires from the engine compartment to interior Firewall plug - driver side - side view.JPG


Found a YouTube video showing the firewall plug on a JL Wrangler (maybe a 2018) - confirms it's the upper plug - this screen capture shows the plug removed:

Screen Shot 2020-02-02 at 9.32.50 AM.png


And here's the plug - it has 2 tabs on it...
Screen Shot 2020-02-02 at 9.34.29 AM.png


Obviously it's on the Driver's side adjacent to the brake booster...
Screen Shot 2020-02-02 at 9.35.42 AM.png


Here's a link with more information on this pass through and plug:
https://www.jlwranglerforums.com/forum/threads/wiring-through-the-firewall.8424/

View from inside the Jeep:
img_5291-jpg.jpg
 
Last edited:
OP
OP
Flexin

Flexin

Well-Known Member
Joined
Apr 4, 2019
Threads
24
Messages
344
Reaction score
347
Location
Michigan
Vehicle(s)
Gladiator Rubicon AKA 'Sky Walker'
Realizing I'm WAAAAAAY late to this discussion, but just thought my own experience might be helpful for other noobs like me.

I wrestled with that plug for about 15 minutes, couldn't get good purchase on it from either side, especially since I thought I needed to twist it to unlock it... (You don't.)

So I sprayed just a little bit of WD40 on the edges (interior and exterior) and it popped right out when I pushed it with one finger (from the foot well side).

You can see in the image below the two tabs that actually hold the plug in place (marked with yellow arrows). You should be able to see these tabs when you stick your head into the footwell and look up there. You can see in the second photo that the tabs are cutouts in the circular wall of the plug.

Presumably, you could just pinch the tabs and push the plug out, but it's probably easier to just spray a little shot of WD40 onto those tabs and you ought to get the same result I did - an easy one-finger push and the plug was lying on my driveway.

If you can't see the tabs, look for the numeral "3" stamped into the plastic of the plug (in the yellow circle in the image below). It should be at the six o'clock position. The tabs are at 90 degrees around, right and left, from the "3" (in other words, they should be at the 3 o'clock and 9 o'clock positions).

The flanges on the plug that look like screw threads (and made me think I needed to rotate the plug to get it out) don't serve much purpose other than to align the plug with the flange cutouts in the firewall through-hole.

I guess the moral of the story is "don't overthink it!"

From here, I plan to drill out a small hole in the plastic plug and use a rubber firewall grommet to protect the wire I pass though it, and to help seal up the hole.

Jeep Gladiator Running wires from the engine compartment to interior Firewall plug - driver side - side view.JPG


Jeep Gladiator Running wires from the engine compartment to interior Firewall plug - driver side - side view.JPG
I may do this when I get around to the onboard AIR :)
 

Sponsored

am1978

Well-Known Member
First Name
Adam
Joined
Jun 26, 2018
Threads
25
Messages
1,286
Reaction score
1,157
Location
MD
Vehicle(s)
2021 JTRD, 2018 JLU Sahara
Occupation
Homebrewer
Realizing I'm WAAAAAAY late to this discussion, but just thought my own experience might be helpful for other noobs like me.

I wrestled with that plug for about 15 minutes, couldn't get good purchase on it from either side, especially since I thought I needed to twist it to unlock it... (You don't.)

So I sprayed just a little bit of WD40 on the edges (interior and exterior) and it popped right out when I pushed it with one finger (from the foot well side).

You can see in the image below the two tabs that actually hold the plug in place (marked with yellow arrows). You should be able to see these tabs when you stick your head into the footwell and look up there. You can see in the second photo that the tabs are cutouts in the circular wall of the plug.

Presumably, you could just pinch the tabs and push the plug out, but it's probably easier to just spray a little shot of WD40 onto those tabs and you ought to get the same result I did - an easy one-finger push and the plug was lying on my driveway.

If you can't see the tabs, look for the numeral "3" stamped into the plastic of the plug (in the yellow circle in the image below). It should be at the six o'clock position. The tabs are at 90 degrees around, right and left, from the "3" (in other words, they should be at the 3 o'clock and 9 o'clock positions).

The flanges on the plug that look like screw threads (and made me think I needed to rotate the plug to get it out) don't serve much purpose other than to align the plug with the flange cutouts in the firewall through-hole.

I guess the moral of the story is "don't overthink it!"

From here, I plan to drill out a small hole in the plastic plug and use a rubber firewall grommet to protect the wire I pass though it, and to help seal up the hole.

Jeep Gladiator Running wires from the engine compartment to interior Firewall plug - driver side - side view.JPG


Jeep Gladiator Running wires from the engine compartment to interior Firewall plug - driver side - side view.JPG
This is what I need to do, but there is more packed in there with the diesel layout, making this plug a PITA to get to. They put the windshield washer fluid reservoir in front of it.
 

Orange01z28

Well-Known Member
First Name
Andrew
Joined
Aug 19, 2020
Threads
63
Messages
1,350
Reaction score
1,695
Location
Queen Creek Arizona
Vehicle(s)
2020 JT Sport S
I'm definitely just going to use the drivers side one myself after reading all this
When I was putting in my switch panel I ended up using the driver's side hole rather than the passenger side because of what a PITA that grommet is. I'm glad S-Tech provided long enough wires to do this since I mounted the relay/fuse box on the passenger side

I'm pretty sure rooting around and trying to cut that passenger side grommet caused my airbag light to come on
 

am1978

Well-Known Member
First Name
Adam
Joined
Jun 26, 2018
Threads
25
Messages
1,286
Reaction score
1,157
Location
MD
Vehicle(s)
2021 JTRD, 2018 JLU Sahara
Occupation
Homebrewer
Nevermind. I found a video with a different route. Much easier.
 
 



Top