Mystery Wire in Ex-Police Tahoe

[billyblue]

I was going to say a fuel prime wire but that is to damn long so I will say it may be a power wire or auxiliary wire that travel to the back for battery charging or brake controller on trailer connection. Almost positive it is a power supply wire for trailer connector.

I looked under the vehicle and sure enough it looks like it goes into the harness shroud going to the rear of the vehicle. I bet its for the Light bar that was on the roof.

 

[SunlitComet]

police power circuit breaker feed if you need diagram pm me email. Can give you the hook up.

---------- Post added at 03:00 PM ---------- Previous post was at 01:35 PM ----------

My bad again trailer feed

Page a-5y
http://www.gmupfitter.com/publicat/2008_BB/08REV_LDCKFST_Elec_D3.pdf

 

[billyblue]

police power circuit breaker feed if you need diagram pm me email. Can give you the hook up.


My bad again trailer feed

Page a-5y
http://www.gmupfitter.com/publicat/2008_BB/08REV_LDCKFST_Elec_D3.pdf

Great...I just found another identical one just behind the fusebox in the same area.

 

[ryanm]

Pinkish-red with dark stripe?
Was in a 2011 Suburban a few weeks ago that had the same thing. One went underneath the steering column to power an aftermarket trailer brake controller. The other went to the extra pin on the 7-way trailer connector.

 

[billyblue]

Pinkish-red with dark stripe?
Was in a 2011 Suburban a few weeks ago that had the same thing. One went underneath the steering column to power an aftermarket trailer brake controller. The other went to the extra pin on the 7-way trailer connector.

Thats it. So I'll need to hoot it up to be able to use the hitch plug in the back?

 

[maisano]

i do beleive it is the wire to charge the battery in a rv and you have to hook it up to the fuse under the hood.

here is what i used when i hooked up my brake controller and that wire came into play

http://www.eworldz.com/truck/gmt900.pdf

 

[steven johnson]

the wire in the photo is for your trailer harness . the wire between the fender and the fuse box is for you brake controller. there are two studs on the front of the fuse box and that's were they go.

 

[ryanm]

Thats it. So I'll need to hoot it up to be able to use the hitch plug in the back?

Only if you need the spare +12v to your trailer. For a battery charger or other interesting accessories. Not normally used unless you've added something to your trailer.

 

[billyblue]

the wire in the photo is for your trailer harness . the wire between the fender and the fuse box is for you brake controller. there are two studs on the front of the fuse box and that's were they go.

I've confirmed this is the correct answer. Thank you

 

[jaybone]

I have the same truck... Its not for a trailer... PPV's are not trailer rated by any means... (2007+).. If you take off the drivers side trunk trim.. Thats what it feeds.. There are 2 aux leads in there for other optional police equipment.. Lights, Battery chargers, rear mounted computers, ect....