2020 Gladiator Launch Edition with electrical issues and right rear signal light not working only when headlight switch is turned on

[InTheWoods]

Hi all. I was wondering if anyone has any advice as to why the right rear signal light works just fine when the headlight switch is off but quits working and displays a warning in the instrument cluster when I turn the switch on? It doesn't matter if it's in the on or auto position. What could cause this?

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[InTheWoods]

Hi all. I was wondering if anyone has any advice as to why the right rear signal light works just fine when the headlight switch is off but quits working and displays a warning in the instrument cluster when I turn the switch on? It doesn't matter if it's in the on or auto position. What could cause this?

I also want to add all the lights on the vehicle are LED and they are factory.

 

[KrashEd]

Here's something that might help:




When weird stuff like that starts happening, I usually test the battery and then start checking harnesses and grounds. Hopefully you locate the issue!

 

[InTheWoods]

Here's something that might help:




When weird stuff like that starts happening, I usually test the battery and then start checking harnesses and grounds. Hopefully you locate the issue!

Thank you for this information. I appreciate it very much. I’m going to have a look at the truck this weekend and see what I find out. I will keep you posted.

 

[InTheWoods]

Update-It has been several days since I replaced the headlamp switch on the dash and the signal light problem seems to be fixed. It doesn’t matter what position the switch is at and the signal lights are working properly.

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