Bundle of wires under fuse box

[MTGalexy]

my 19 6.7L 2500 did not come with fog lights. I was tracing the wire harness because I have the fog light button on the knob. This way I would be able to install after market fog lights. However, I found these wires bundled and taped together under the fuse box. Can anyone help me with this?

 

[H3LZSN1P3R]

my 19 6.7L 2500 did not come with fog lights. I was tracing the wire harness because I have the fog light button on the knob. This way I would be able to install after market fog lights. However, I found these wires bundled and taped together under the fuse box. Can anyone help me with this?View attachment 11197View attachment 11198

Its for Plow lighting..... if you don't have foglights you don't have the button you are most likely seeing the cargo light button

 

[MTGalexy]

Its for Plow lighting..... if you don't have foglights you don't have the button you are most likely seeing the cargo light button

You’re right!! Thanks I don’t have the button. I guess the best option is to install aux switch for fog lights. If the plow lighting cables are there, is there other side connected to anything? A button or something? I tried to look into a diagram. There are no open aux switches from factory installed.

 

[H3LZSN1P3R]

You’re right!! Thanks I don’t have the button. I guess the best option is to install aux switch for fog lights. If the plow lighting cables are there, is there other side connected to anything? A button or something? I tried to look into a diagram. There are no open aux switches from factory installed.

They are made to connect to a plow relay harness or isolation module

 

[Brutal_HO]

They are made to connect to a plow relay harness or isolation module

Do all the trucks (trims) have these blunt cut "trigger" wires present?

 

[H3LZSN1P3R]

Do all the trucks (trims) have these blunt cut "trigger" wires present?

From my understanding yes i have heard yes and no about the pw though

 

[Jimmy07]

Do all the trucks (trims) have these blunt cut "trigger" wires present?

 

[H3LZSN1P3R]

I could not remember i know before 2019 they did not get them..... on a side note any idea what the 7th wire in that bundle is for? There is a solid green (i think green) on my 19 and i can not find anything about it

 

[Jimmy07]

I could not remember i know before 2019 they did not get them..... on a side note any idea what the 7th wire in that bundle is for? There is a solid green (i think green) on my 19 and i can not find anything about it

All 2015-2018 HDs get the wires except for power wagon.
I believe the green wire is so you can ground it, and fault monitoring for all rear facing lighting will be disabled for upfitter beds with LED lighting.

 

[Jimmy07]

I could not remember i know before 2019 they did not get them..... on a side note any idea what the 7th wire in that bundle is for? There is a solid green (i think green) on my 19 and i can not find anything about it

Correction what I said above about that “green” blunt cut wire. It should be green/gray stripe, and it is for a PTO wired remote.

 

[H3LZSN1P3R]

Correction what I said above about that “green” blunt cut wire. It should be green/gray stripe, and it is for a PTO wired remote.

Ah makes sense

 

[elephantrider]

that's interesting. I don't have that wire bundle on mine.

 

[H3LZSN1P3R]

that's interesting. I don't have that wire bundle on mine.

If you unclip and lift the fuse box it will be there, mine was at the very bottom of the harness bundle

 

[elephantrider]

oh I unclipped and had all those fuse boxes pulled out when I installed the aux wiring kit. I'll have to go check a few pics but man, I had that whole area stripped out and don't remember seeing it. it's likely there though, based on that doc.