Can you guys tell me what these wires are for?

[WrenchWhore]

They're hot and look important.

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[Nero]

Factory trailer brake wiring. I have a handful on my workbench for when I finally put mine on. On the other side of the firewall you'll have a round 3 pin connector, just disconnect it.

 

[WrenchWhore]

Factory trailer brake wiring. I have a handful on my workbench for when I finally put mine on. On the other side of the firewall you'll have a round 3 pin connector, just disconnect it.

Thanks @Nero. I had no idea they came with factory trailer brake wiring! You learn something new everyday.

 

[Clb]

What years had this?
As my 88 was a wire nightmare not sure there are enuff conductors there.
Op
Do fill in the trucks statts in yer sigline.
Makes it hard to help not knowing what you have.

 

[Nero]

Not sure what years had this, but my old 88, my dad's old 89, his current 90 and my 91 all had them.

 

[WrenchWhore]

What years had this?
As my 88 was a wire nightmare not sure there are enuff conductors there.
Op
Do fill in the trucks statts in yer sigline.
Makes it hard to help not knowing what you have.

Totally. I tried doing that the other day but got lost.

 

[DaveBen]

Click on your WrenchWhore picture on the top right corner of this page. Once you are at your Account, click on Signature and fill in the details.

 

[WrenchWhore]

Click on your WrenchWhore picture on the top right corner of this page. Once you are at your Account, click on Signature and fill in the details.

What years had this?
As my 88 was a wire nightmare not sure there are enuff conductors there.
Op
Do fill in the trucks statts in yer sigline.
Makes it hard to help not knowing what you have.

Bam! Got it.

 

[david85]

My 1986 has it as well. Original connector is still in tact but I don't think it was ever hooked up to anything even when an aftermarket controller was installed.