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Wire harness under passenger headlight behind bumper.

nguyet34
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nguyet34 Enthusiast

nguyet34

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Does anyone know what the extra wiring harness is for, that is located under the passenger side headlight on a 2019 Silverado LT. The only thing I can think of is that its possibly for parking sensors? It's not connected to anything.

IMG-4199.jpg

nguyet34 Enthusiast

nguyet34

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I'm not so sure.  Perhaps? It didn't come with fog lights (which makes no sense) but if it was, that would be perfect as I'm doing a fog light install. Although, I don't have a fog light button to test. 

gemarsh Senior Enthusiast

gemarsh

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Posted

Could it be that the other end of the harness, is waiting on you to install the button?

 

 

 

fastk9dad Enthusiast

fastk9dad

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Posted

Is it the ambient air temp sensor? It looks like it should be mounted to the oval hole above it but it fell out.

 

If you can't see male or female connectors and there is a "plug" in it, then it's likely an air temp sensor.

nguyet34 Enthusiast

nguyet34

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3 minutes ago, fastk9dad said:

Is it the ambient air temp sensor? It looks like it should be mounted to the oval hole above it but it fell out.

 

If you can't see male or female connectors and there is a "plug" in it, then it's likely an air temp sensor.

hmm.. didn't think of that.. looking back at my photo, it appears to be a female plug...will have to research this lead.. thank you

fastk9dad Enthusiast

fastk9dad

Posted
Posted
3 minutes ago, nguyet34 said:

hmm.. didn't think of that.. looking back at my photo, it appears to be a female plug...will have to research this lead.. thank you

 

You're welcome. Looking at the video and your photo they almost appear to be the same length but we are looking at the underside of yours and the front side of the one in the video as its attached to the frame.

nguyet34 Enthusiast

nguyet34

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1 minute ago, fastk9dad said:

 

You're welcome. Looking at the video and your photo they almost appear to be the same length but we are looking at the underside of yours and the front side of the one in the video as its attached to the frame.

they should both be on the front facing side.. mine is just a tad zoomed in. 

gemarsh Senior Enthusiast

gemarsh

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Posted

I was lead to believe the air temp sensor was in the passenger mirror. 

 

fastk9dad Enthusiast

fastk9dad

Posted
Posted (edited)
8 hours ago, gemarsh said:

I was lead to believe the air temp sensor was in the passenger mirror. 

 

 

I looked it up on Alldata and you are correct. It does not appear to be for fog lights as that harness connection point is supposed to be behind the right headlight.

Edited by fastk9dad
fastk9dad Enthusiast

fastk9dad

Posted
Posted

I'm going with it's the harness plug for the parking sensors. Look where the sub harness connection is located within the bumper (circled in yellow) it looks like it should line up with the harness plug on the frame.

 

 

Screenshot 2022-03-18 084457.jpg

nguyet34 Enthusiast

nguyet34

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13 minutes ago, fastk9dad said:

I'm going with it's the harness plug for the parking sensors. Look where the sub harness connection is located within the bumper (circled in yellow) it looks like it should line up with the harness plug on the frame.

 

 

Screenshot 2022-03-18 084457.jpg

Agreed. I’m going to chalk it up to the parking assist sensors as well. Was searching all night and may have found something,  although, in the back of my mind, not sure why the video above had it connected but there were no sensor holes on the bumper. Thanks everyone! Should we close this out and call it a day?

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