Aux Switch wiring location

[H3LZSN1P3R]

I just did some re-wiring on my 20yr old motorcycle and it was a headache (for me)... that would drive me nuts!
Looks good though!

Aslong as you can keep your wires labeled its not bad you can make a rats nest turn in to something much cleaner.... my 5 relay harness for plow light wiring... the plow dealer wanted 2500$ For the plow wiring i spent 150$ and a few things from work

 

[Brutal_HO]

Nice.

My last wiring job.




I "unwired" the flash storage I installed in 2018 that was 4x the qty of fiber and rack space. This one was 768TiB of hardware compressed flash in 2U (3.5") of rack space.

 

[20Limited3500]

Nice.

My last wiring job.

View attachment 12401


I "unwired" the flash storage I installed in 2018 that was 4x the qty of fiber and rack space. This one was 768TiB of hardware compressed flash in 2U (3.5") of rack space.

Now you're just showing off.

Nice work.

 

[JoeCoz]

I misspoke. Not on the driver's side. They are on top of the rear tire, passenger side. Here's pic of the two in question plus one other that I don't know what it is used for.

View attachment 4799

hoping theyre in the same spot on my 2021 2500 tradesman

 

[PatrickBrooke]

@Jimmyo7 Hi Jimmy. I am going down this road on my 2024 Ram 2500 Rebel. I am wanting to tap the wires into the x/y 125A plug as well. Is there any chance that you could provide an actual picture of which plug this is under the dash? I am pretty sure i know which one but i want to make good and sure before i tap into it. I'm going the route of buying the Auxiliary switch kit that Mopar has pn 82216450ab and robbing all of the wires and stuff out of it and installing into my existing PDC. I think it will be the easier route for me than trying to create all of the wiring from scratch. I'm not interested in getting power to the back of the truck as some people are with tapping the x/y 920. Any advice or help would be greatly appreciated!

 

[jsalbre]

@Jimmyo7 Hi Jimmy. I am going down this road on my 2024 Ram 2500 Rebel. I am wanting to tap the wires into the x/y 125A plug as well. Is there any chance that you could provide an actual picture of which plug this is under the dash? I am pretty sure i know which one but i want to make good and sure before i tap into it. I'm going the route of buying the Auxiliary switch kit that Mopar has pn 82216450ab and robbing all of the wires and stuff out of it and installing into my existing PDC. I think it will be the easier route for me than trying to create all of the wiring from scratch. I'm not interested in getting power to the back of the truck as some people are with tapping the x/y 920. Any advice or help would be greatly appreciated!

I don’t have a picture of it plugged in, but I took this one of XY125 when I did my install. It should be pretty easy to find with the yellow tape.

 

[BadKarma]

Trying to add an aftermarket 6gang aux switch. Trying to tap into an acc wire but I’m a little slow. These wires capped off next to the fuse box have any use since I’m in a tradesman?

 

[PatrickBrooke]

Trying to add an aftermarket 6gang aux switch. Trying to tap into an acc wire but I’m a little slow. These wires capped off next to the fuse box have any use since I’m in a tradesman?

@BadKarma
I believe that these wires are for the snow chief prep package. See the diagram below. As far as are they "active" wires. that i am not sure of. I want to say that they are not though. I could be wrong. I am still learning the ropes on these acc wires.

 

[Brutal_HO]

Trying to add an aftermarket 6gang aux switch. Trying to tap into an acc wire but I’m a little slow. These wires capped off next to the fuse box have any use since I’m in a tradesman?

Assuming you're just looking for power for the control part and not trying to power multiple accessories from this circuit. High current Power draw should be connected to the HAPP bar on the battery.

Post in thread 'In Cab Power FAQ -- AUX Switch power info -- Chassis power info'

Nov 27, 2022

Brutal,
Were you able to find the upfitter doc that you referenced above?

I'll find the direct PDF link and add it to the first post, but here's the basics; Note it's only RUN/ACC power.

Connector C5, Pin 7 = Circuit F781 PK/YE

(ETA: It looks like F986 is fused by F90/91) which is selectable IGN/BAT) - could use verification form someone with TechAuthority access and more insight. @Jimmy07

Connector C7, Pin 9 = Circuit F986 PK/YE


"On all vehicles there are circuits are F781 and F986 (Run/Accessory feeds), on vehicles with auxiliary switches...

• Brutal_HO

• 

 

[BadKarma]

Assuming you're just looking for power for the control part and not trying to power multiple accessories from this circuit. High current Power draw should be connected to the HAPP bar on the battery.

Post in thread 'In Cab Power FAQ -- AUX Switch power info -- Chassis power info'

Nov 27, 2022

Brutal,
Were you able to find the upfitter doc that you referenced above?

I'll find the direct PDF link and add it to the first post, but here's the basics; Note it's only RUN/ACC power.

Connector C5, Pin 7 = Circuit F781 PK/YE

(ETA: It looks like F986 is fused by F90/91) which is selectable IGN/BAT) - could use verification form someone with TechAuthority access and more insight. @Jimmy07

Connector C7, Pin 9 = Circuit F986 PK/YE


"On all vehicles there are circuits are F781 and F986 (Run/Accessory feeds), on vehicles with auxiliary switches...

• Brutal_HO

• 

I believe that is correct. I have The power for the control box connected to the battery bar. I am Looking to connect the wire (b) from the control box (assuming it’s for the controller) to an ACC source.

 

[PyroJoe]

Everything is positioned in painfully easy-to-access locations on the 2025. More spread out. No digging required to find them. And the 2 rear wires are now the same size.

Anyone know what gauge these rear wires are? Wondering if it's big enough to handle a 23 max-amp air compressor. My manual says I need 8awg.
Also, is there a Ground wire supplied at the rear? Or a really good spot to ground to back there?

 

[Brutal_HO]

Everything is positioned in painfully easy-to-access locations on the 2025. More spread out. No digging required to find them. And the 2 rear wires are now the same size.

Anyone know what gauge these rear wires are? Wondering if it's big enough to handle a 23 max-amp air compressor. My manual says I need 8awg.
Also, is there a Ground wire supplied at the rear? Or a really good spot to ground to back there?



View attachment 87656 View attachment 87657 View attachment 87658

Unless something changed, the wiring chart shows those circuits IGN/BAT+ are fused 20A.

You're also running through the in-cab jumper harness.

If anything, I'd pull one off the lead end and tie them together to carry more current. A500/A606



The AUX wiring is rated to 40A (28A continuous), but length is much shorter there with the supplied jumpers looking to be 10AWG.

Chassis ground is good to 50A.

Post in thread 'AUX pass-thru wiring.'

Oct 24, 2020

Let me start by saying I am truly sorry for once again bringing this up.
After I plug this harness in to the gray connector under dash the single wire is my pass thru #6?
And than that loose wire can be hooked up directly to a device with in side the cab ?
What do you all do with the extra looped wires that are designed for the rear of truck ? Stuff them up under dash?
Thanks again.

I think you're conflating a few things.

The pass through circuit (G425) is on pin #5 VT/YE (Violet/Yellow) wire of the under dash upfitter connector. Yes, the blunt cut wire.




This pass...

• Brutal_HO

• 

 

[Brutal_HO]

Another good option if you want to put it on an AUX switch is use the pass-thru circuits and re-pin one AUX to connect to the in cab jumper on pins 1&4 that run to the rear.

Then you still have an IGN and BAT+ source available at that in cab connector.

 

[PyroJoe]

I like the doubling up Run/Batt to double the ampacity. That's what I did with my Charger's Aux switches for a big light bar.
However, I'm planning to connect Aux2 to the Pass-thru to the BATT to control the rear lights.
I was intending to swap in a 40A fuse for the RUN wire from one of the Aux. The physical size of the RUN wire vs. my Logiq compressor's supplied wire appear to be the same size, and the Logiq wire is longer than the truck. Wish they'd just print the AWG on them.
The quick connects are my only concern using the RUN wire for the compressor. Those seem to be where I always see failures from overloading.
Finding a ground spot that won't rust out in the winter is my biggest concern now. The Charger's pre-wired Aux connections gave you + and - wires which was really nice.

 

[Jmonty]

I was also looking at going with LogIQ (AirIQ HD2) and have been debating on how to install, either letting the system track voltage to turn on/off OR wiring the orange wire into an AUX button so I could cycle it on/off that way. Shouldn't need to connect the red wires to the power distribution just go straight to the battery.

 

[PyroJoe]

I was also looking at going with LogIQ (AirIQ HD2) and have been debating on how to install, either letting the system track voltage to turn on/off OR wiring the orange wire into an AUX button so I could cycle it on/off that way. Shouldn't need to connect the red wires to the power distribution just go straight to the battery.

I just put it on my 06 Duramax and connected their orange wire to an Ign wire, and yet it still turns on when the truck is off. That's why on the Cummins, I want to supply main power via the RUN (ign) wire, so that it can't run with truck off.
The downside to allowing it to run when it sees 14+ volts is if you put a trickle charger on the truck while it's in storage or your truck's dead and needs a jump.

 

[Jmonty]

Did LogIQ know why that was happening? It should have not been running if the IGN wire you used wasn't hot with truck off cause I assume your Duramax batteries weren't floating at > 13v LOL. 100% with you on the trickle charge scenario it would just stay constantly energized thinking the truck was running thats one of those possibilities that was leading me to using up one of the AUX ports to control it using the orange wire.

 

[PyroJoe]

Anyone know what the Brown/Grey wire in port 2 does?

 

[Jimmy07]

Anyone know what the Brown/Grey wire in port 2 does?

View attachment 87699

From the schematics, it looks like that is a pass thru to bring an aux accessory into the cab. There should be the same color blunt cut in the engine compartment.

 

[Brutal_HO]

Anyone know what the Brown/Grey wire in port 2 does?

View attachment 87699

You should look through the sticky below the image:

W550 Pin 2 BG/GY pass-thru circuit. It will be bundled with 3 other blunt cut wires near the Aux PDC in the engine bay. Those other 3 are on the white upfitter jumper if you have a 21+.

Thread 'In Cab Power FAQ -- AUX Switch power info -- Chassis power info'

Apr 1, 2022

This is a roll-up thread that should answer most if not all questions regarding power availability in the cab.

A lot of the credit for technical detail goes to @Jimmy07 without whose help and guidance much of this info would be hard to assemble.
There are other contributors, you know who you are. If you recognize a photo as one of yours, shoot me a PM and I'll add the credit.

PDC and AUX PDC Fuse worksheet: https://docs.google.com/spreadsheet...ouid=105565244363658163151&rtpof=true&sd=true
or here...

• Brutal_HO
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