So... Do I have AUX prewiring or not?

[Baltimore]

Alright, let's see what you others think and can make of things. My truck is a Limited Hybrid, so no "factory aux preinstalled" (shoulda been a stinking option).

Pulling apart the switch panel, I have plugged wires that terminate into each of the 3 spots that would have been the switches for AUX1, AUX2, AUX3
Way up under my driver side rear bumper, I see an empty plug about where the Trailhunter onboard compressor/inflator would sit.
I also see an empty plug (no cap) on the "bus" sitting at the rear bumper (not sure which would be "D").
I'm not certain if I have the "A" / "C" connector in the engine bay or not... nothing screamed out at me as an empty plug unless its actually attached somewhere.
When I open the engine bay driver side fuse panel though, the AUX row is vacant.

Is the "A" / "C" plug actually there and I'm overlooking it? Or do I have the wires running from the cab to the engine bay and just terminating somewhere?

For those that actually have the AUX wiring, how does it compare?

I'm really hoping (really for simplicity sake) that the wiring is all there in the harness and I don't need to run a new line for my grille light bar (needs <10A) and that I could capitalize on a preexisting, but undocumented, AUX2 run.

Driver's rear fender of the bed.

Engine bay, near washer fluid

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[wolfpackwest]

Way up under my driver side rear bumper, I see an empty plug about where the Trailhunter onboard compressor/inflator would sit.
Driver's rear fender of the bed.

If it makes you feel any better, I have a trailhunter and that same plug is left open/empty on mine too, so I'm not sure what it's there for or its intended purpose, but it's not for the compressor.

 

[Baltimore]

If it makes you feel any better, I have a trailhunter and that same plug is left open/empty on mine too, so I'm not sure what it's there for or its intended purpose, but it's not for the compressor.

So it might be the AUX-"D".

Do you have the AUX pre-wire? to see if you have those fuse positions in the front left fuse tray? and where/what the plug looks like for AUX-"A"/"C"?
I found another post where someone put up a picture, but unless it's just dangling there and not tucked away, I cannot tell :-(

Seems a touch odd that one end of the harness would be finished plug and the other end not (or ... if it's wrapped up as bare wires for the back of a fuse BUS in the mess under my fuse box??

 

[Pootklopp]

I know you're looking at the other locations but here is my aux harness(B I think) closest to the switches. I have it connected to the factory of tail shown in my hand. May be the easiest to confirm since it's so close.

 

[Baltimore]

I know you're looking at the other locations but here is my aux harness(B I think) closest to the switches. I have it connected to the factory of tail shown in my hand. May be the easiest to confirm since it's so close.

I'll have to look next time I have it pulled apart. I was hoping the "A"/"C" was an easy spot since that's just a hood pop (and the one I would want to tap into for my grille light bar).

Do you have a fuse bank here (engine bay, driver's side)

if so, I wonder what the part number would be - to at least land the fuse/relay into a proper home, even if it's aftermarket wiring from the fuse box to the light.

 

[Baltimore]

In the great continuation of this thread - do those with AUX prewire also have these "dead ends"?
or what the heck are they connecting into?


under driver's footrest

Engine, driver's side, at the firewall next to the pass-through grommet

In between grille and washer fluid filler

 

[Astewart23]

 

[Baltimore]

Thanks. Been there, read that. Doesn't positively answer the question though.

Do those with Aux prewired have these same dead ends? Do they not have them? Has anyone with them done voltage/fuse checks that can share?

I'm starting to suspect that the main harness only runs to the engine left fuse relay box, and that it's a separate part number for the aux tray insert plus a separate part number for the harness running from said box to at least the "A", "C" and "B" locations (since they would all be within 5ft of each other in a fairly "straight" line). If not also "D" since the diagram shows all Aux being bias to the one side of the truck.

Trying to crowd source this knowledge and investigation due to the various setups, time, and that the hybrids do not have the battery in the engine bay, so it complications things much more for a power source of one can't leverage an existing point in the engine fuse relay boxes.

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