Sponsored

New front bumper, now fog lights do not work. (Update)

Varooom

Well-Known Member
First Name
Doug
Joined
Dec 14, 2022
Threads
22
Messages
91
Reaction score
160
Location
Tallahassee Fl
Vehicle(s)
2023 Jeep Gladiator Mojave, 2020 Challenger HC
Occupation
IT
So I put on the Jeep Adventure HD steal bumper this weekend. All went well, everything fit perfectly including the fog light swap with harness.
Now the fog lights do not work. My bad, this is a new Jeep (about a month now and 1050 miles). I never tested the fog lights so I don't know if they ever worked in the first place.
I have verified the connections to the bulbs along with the connection to the main harness, all seen great. I looked at the owners manual to check a fuse but cant find one for the fog lights.
Any suggestions would be greatly appreciated.
Thanks for your time,
Varooom (Happy Fathers Day!)
BTW: Its a 2023 Majove with LED light package.

Jeep Gladiator New front bumper, now fog lights do not work. (Update) DSC02111


Jeep Gladiator New front bumper, now fog lights do not work. (Update) DSC02136
Sponsored

 
Last edited:

Sandevino

Well-Known Member
First Name
Mike
Joined
Jun 14, 2022
Threads
21
Messages
946
Reaction score
1,828
Location
North Texas
Vehicle(s)
2023 Jeep Gladiator Rubicon
The fog light frame harness connector is to the left of the bumper. Disconnect the harness connector from the fog lights and turn the lights on on the dash. Probe the pins in the harness connector for 12v current. If you have 12v, the issue is with either the lights, wiring or both inside the bumper. If you don’t have 12v there, check fuses. Good luck!
 
OP
OP
Varooom

Varooom

Well-Known Member
First Name
Doug
Joined
Dec 14, 2022
Threads
22
Messages
91
Reaction score
160
Location
Tallahassee Fl
Vehicle(s)
2023 Jeep Gladiator Mojave, 2020 Challenger HC
Occupation
IT
Thanks Sandevino, I will get under there with a multimeter and check voltage as you suggested.
However, I have not found the fuse for the fog lights. Looked on the listing in the owners manual and nothing. It may be piggybacking on another circuit but everything else works.
Thanks again,
Varooom
 

ShadowsPapa

Well-Known Member
First Name
Bill
Joined
Oct 12, 2019
Threads
247
Messages
40,440
Reaction score
53,853
Location
Runnells, Iowa
Vehicle(s)
'25 JTMX, '23 JLU 4xe, '82 SX4, '73 Javelin
Occupation
Retired auto mechanic, frmr gov't ntwrk security admin
Vehicle Showcase
3
So these are your original fog lights and original harness?
These fog lights didn't come with the bumper?


The fog light frame harness connector is to the left of the bumper.
As standing in front of the Jeep looking at it.
Otherwise it's on the right frame rail, outer side of the frame.
(But then he knows that having swapped bumper, lights and harness.)
 
OP
OP
Varooom

Varooom

Well-Known Member
First Name
Doug
Joined
Dec 14, 2022
Threads
22
Messages
91
Reaction score
160
Location
Tallahassee Fl
Vehicle(s)
2023 Jeep Gladiator Mojave, 2020 Challenger HC
Occupation
IT
Yes, this is the original harness and bulbs swapped out of the stock bumper. Yes, passenger side for the plug in harness.

Silly me, I should have tested the fog lights before the swap. Maby they were not working originally.
 

Sponsored

ShadowsPapa

Well-Known Member
First Name
Bill
Joined
Oct 12, 2019
Threads
247
Messages
40,440
Reaction score
53,853
Location
Runnells, Iowa
Vehicle(s)
'25 JTMX, '23 JLU 4xe, '82 SX4, '73 Javelin
Occupation
Retired auto mechanic, frmr gov't ntwrk security admin
Vehicle Showcase
3
Yes, this is the original harness and bulbs swapped out of the stock bumper. Yes, passenger side for the plug in harness.

Silly me, I should have tested the fog lights before the swap. Maby they were not working originally.
This then is a matter of your original stock lights not working. Just wanted to be sure there wasn't a swap of lights or light types.

I would then do as suggested and see if there's any voltage at the harness when the fog lights are turned on. (keeping in mind they only operate with the lights in low beam)
Turn headlights on, turn fog lights on, ensure headlights are on low beam, then I'd unplug just one of the lights, and check for voltage at that connector and if there is not, then check back where that harness plugs in and see if there's voltage at the main connector.
 
OP
OP
Varooom

Varooom

Well-Known Member
First Name
Doug
Joined
Dec 14, 2022
Threads
22
Messages
91
Reaction score
160
Location
Tallahassee Fl
Vehicle(s)
2023 Jeep Gladiator Mojave, 2020 Challenger HC
Occupation
IT
Shall do!
Thank you.
 

Gvsukids

Well-Known Member
First Name
Justin
Joined
Mar 7, 2020
Threads
26
Messages
7,259
Reaction score
6,897
Location
Grand Rapids
Website
www.youtube.com
Vehicle(s)
2020 Gladiator Sport S Max Tow
Occupation
Delivery Driver

ShadowsPapa

Well-Known Member
First Name
Bill
Joined
Oct 12, 2019
Threads
247
Messages
40,440
Reaction score
53,853
Location
Runnells, Iowa
Vehicle(s)
'25 JTMX, '23 JLU 4xe, '82 SX4, '73 Javelin
Occupation
Retired auto mechanic, frmr gov't ntwrk security admin
Vehicle Showcase
3
Jeep will blame the swap.
Frankly, it's amazing what they don't notice. There's been times I've pointed out even to the selling dealership something I've done and I get a "Oh, I didn't realize that" back at me.

Unless he pinched a wire (easily done since these wires, at least on the MOPAR Rubicon steel bumper, run along the top of the bottom rear edge of the bumper. Not a great place to run the wiring harness but about all they could do and not have it show otherwise.
 

Sponsored

Curt Oz

Well-Known Member
First Name
Curt
Joined
Sep 21, 2022
Threads
1
Messages
187
Reaction score
178
Location
Freeburg
Vehicle(s)
2021 Gladiator Sport S
Occupation
Retired
Just in case you need it. Its the only service manual out there. Hopefully the wiring hasn't changed
Jeep Gladiator New front bumper, now fog lights do not work. (Update) Screenshot_20230618_151507_Samsung Internet
 
OP
OP
Varooom

Varooom

Well-Known Member
First Name
Doug
Joined
Dec 14, 2022
Threads
22
Messages
91
Reaction score
160
Location
Tallahassee Fl
Vehicle(s)
2023 Jeep Gladiator Mojave, 2020 Challenger HC
Occupation
IT
Update: No voltage to the lights themselves. Also, I do not get the indicator light on the dash. No power at the connection behind the bumper either.
I am going behind the switch on the dash next. Will have to wait until tomorrow, kids are here for Father's day. Time to fire up the grill and open an adult beverage.
Hope y'all have a great Father's Day!
 

ShadowsPapa

Well-Known Member
First Name
Bill
Joined
Oct 12, 2019
Threads
247
Messages
40,440
Reaction score
53,853
Location
Runnells, Iowa
Vehicle(s)
'25 JTMX, '23 JLU 4xe, '82 SX4, '73 Javelin
Occupation
Retired auto mechanic, frmr gov't ntwrk security admin
Vehicle Showcase
3
Power for these comes from the BCM - not the switches themselves, so if you have no power to the lights or the main connector on the right frame rail - time to see the dealer unless you want to trace clear back to the BCM and see why it's not responding to a signal from the light switches to turn on the fog lights.
 

Curt Oz

Well-Known Member
First Name
Curt
Joined
Sep 21, 2022
Threads
1
Messages
187
Reaction score
178
Location
Freeburg
Vehicle(s)
2021 Gladiator Sport S
Occupation
Retired
Just curious, since your bed light switch is below the fog light switch do they work ?
Also mentioned in an earlier post, make sure your lights are in parking mode or headlights on low beam.


Jeep Gladiator New front bumper, now fog lights do not work. (Update) Screenshot_20230618_165456_Driv
Sponsored

 
 







Top