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Aux Switches
- Thread starter EEBTTF
- Start date
So with everything going on, I finally found some time to get this taken care of. I used the factory switches and replaced the toggles in my ‘19 Power Wagon. From those, I used a wiring harness supplied by forum member paulvi. I ran his harness wires out through an access point behind the battery here:
I put together a relay panel that I got from waytek. I’d have to do some digging, but here it is all wired up and installed on the panel I made to mount in the factory location behind the battery.
here is the relay panel mounted behind the battery and hooked up.
this is only a 5 relay box, which will work fine as my 6th aux switch will likely get used for a compressor setup that will have its own relays.
bear in mind, when wiring the relays, the aux switches provide the negative signal to the relays, so it takes a bit of figuring if you’re used to positively switched relays.
at the end of the day, everything works. It’s only running a light bar currently, but will run some more lights and eventually a compressor setup.
i apologize for the late response. It took me actually getting COVID to find the time to get this done. It was tough, but the sunshine and fresh air did some good along with lots of breaks lol
any questions, ask away.
Attachments
My parts list for the relay box. I got it all from Waytek:
- 46345 EATON's Bussmann Series 15305-5-2-4 RTMR Mini Fuse Panel, Holds 3 or 5 Relays, 10 Mini Fuses w/ Cover- 39000 Aptiv 15324982 Metri-Pack 280 Series Green Cable Seal
- 31068 Aptiv 12129409 Metri-Pack 280 Series, 16-14 GA Female Loose Tangless Terminal
- 30069 Aptiv 12110847 Metri-Pack 280 Series, 18-16 GA Female Loose Tangless Terminal
- 39010 Aptiv 12010300 1-Way Cable Cavity Plug Seal, Round, Green
- 39002 Aptiv 15324981 Metri-Pack 280 Series Cable Seal, Blue
- 39001 Aptiv 15324980 Metri-Pack 280 Series Gray Cable Seal
- 30068 Aptiv 12110846 Metri-Pack 280 Series, 22-20 GA Female Tangless Terminal
- 75730 Song Chuan ISO 280 Micro Relay, Resistor, 35A, 12V, SPST, 301-1A-C-R1-U03-12VDC
- 138304 Molex 19419-0012 MX150L 6-Pin Connector Plug, 22-18 AWG
- 38305 Molex 19418-0011 MX150L 6-Pin Connector Housing, 22-18 AWG
- 30097 Molex 33012-3002 Loose MX150 Socket Terminal, 20-18 AWG
- 30096 Molex 33000-1002 Loose MX150 Pin Terminal, 20-16 AWG
I fabricated the mount out of a piece of scrap stainless I had laying around. I may have over engineered everything, but it’s all water tight and I can remove it easily to add or remove anything.
- 46345 EATON's Bussmann Series 15305-5-2-4 RTMR Mini Fuse Panel, Holds 3 or 5 Relays, 10 Mini Fuses w/ Cover- 39000 Aptiv 15324982 Metri-Pack 280 Series Green Cable Seal
- 31068 Aptiv 12129409 Metri-Pack 280 Series, 16-14 GA Female Loose Tangless Terminal
- 30069 Aptiv 12110847 Metri-Pack 280 Series, 18-16 GA Female Loose Tangless Terminal
- 39010 Aptiv 12010300 1-Way Cable Cavity Plug Seal, Round, Green
- 39002 Aptiv 15324981 Metri-Pack 280 Series Cable Seal, Blue
- 39001 Aptiv 15324980 Metri-Pack 280 Series Gray Cable Seal
- 30068 Aptiv 12110846 Metri-Pack 280 Series, 22-20 GA Female Tangless Terminal
- 75730 Song Chuan ISO 280 Micro Relay, Resistor, 35A, 12V, SPST, 301-1A-C-R1-U03-12VDC
- 138304 Molex 19419-0012 MX150L 6-Pin Connector Plug, 22-18 AWG
- 38305 Molex 19418-0011 MX150L 6-Pin Connector Housing, 22-18 AWG
- 30097 Molex 33012-3002 Loose MX150 Socket Terminal, 20-18 AWG
- 30096 Molex 33000-1002 Loose MX150 Pin Terminal, 20-16 AWG
I fabricated the mount out of a piece of scrap stainless I had laying around. I may have over engineered everything, but it’s all water tight and I can remove it easily to add or remove anything.
Great install!
I used what would appear to be the same Techflex for my underhood light wiring install, but would caution anyone watching that it's not rated for high heat. If the bundle goes anywhere near anything hot, it will melt.
Thanks! That tech flex doesn’t get near anything hot.
Great write up! I have a question, and I apologize if I missed this when reading through...
But when you use the stock Aux switches and wire them to an aftermarket PDC do you have to do any programming with alpha or is it just a simple wiring between the stock switches and aftermarket PDC (relays and fuses) avoiding any of the truck computers? If this is the case that would be awesome and sounds very simple to figure out. Thanks!
i did have to use alfaobd to turn on the commercial menus in the instrument cluster. That’s where you can make the selections for what you want the switches to do. They can be on/off or momentary and you can determine whether they can be active with only the ignition switch or battery. I’ve not messed with these settings much, only the basics to get the switches operating correctly.
Ok that helps a lot, thanks for the info!
Thanks again to PaulVI and to BigSwede for pioneering the work here.
Here are some pics of the wire loom install thar PaulVI supplied to enable your own Aux PDC.
Nothing exciting about the pics but super simple install.
Sent from my SM-G998U using Tapatalk
Here are some pics of the wire loom install thar PaulVI supplied to enable your own Aux PDC.
Nothing exciting about the pics but super simple install.
Sent from my SM-G998U using Tapatalk
Thanks again to PaulVI and to BigSwede for pioneering the work here.
Here are some pics of the wire loom install thar PaulVI supplied to enable your own Aux PDC.
Nothing exciting about the pics but super simple install.
excellent! Some of the pics I forgot to take. I chalk it up to COVID brain
Hey guys, I gave in and went a simpler route. I definitely can appreciate those that pioneered the way with getting the factory switches working! It definitely looks much cleaner that way but I just didn't have the time.
I went with the rough country MLC-6, and for those looking for a simpler route I feel it was a good compromise. It took me 1.5hrs taking my time once I figured out where I wanted to put everything. Drilling was kept to a minimum, and only on easily replaceable parts. It'll definitely work for my needs, now I just have to find time to hook up the roadside work flasher lights.
I went with the rough country MLC-6, and for those looking for a simpler route I feel it was a good compromise. It took me 1.5hrs taking my time once I figured out where I wanted to put everything. Drilling was kept to a minimum, and only on easily replaceable parts. It'll definitely work for my needs, now I just have to find time to hook up the roadside work flasher lights.
Attachments
Hey Guys! I was directed to this thread from another by Brutal.
I have read the thread and I THINK I have a handle on it. I will be adding Aux panel 68376642AE to my 2019 3500 Tradesman HO. If I do this, and activate it via AlfaObd, I still need to add wires to the back of the connector correct? (Pic attached) If I need to add wires, does anyone have part numbers for the crimps?
The wires ground, which I will attach to my own Aux relay panel.
Thanks Guys!! Awesome Forum!
I have read the thread and I THINK I have a handle on it. I will be adding Aux panel 68376642AE to my 2019 3500 Tradesman HO. If I do this, and activate it via AlfaObd, I still need to add wires to the back of the connector correct? (Pic attached) If I need to add wires, does anyone have part numbers for the crimps?
The wires ground, which I will attach to my own Aux relay panel.
Thanks Guys!! Awesome Forum!
Attachments
Nice! Good luck with the project, I'd like to see pics of yours once completed. I'll be connecting the first set of lights to my aftermarket switches soon.
The six wires are in that connector (they are on every single truck), BUT, the other ends of them stop at the XY125 connector, and do not continue to the left dash harness into the engine bay. It’s hard to source the the terminals for the XY125 connector without having to buy 100 of them, so the simplest thing you can do is de-pin this cluster of six wires from the switch bank connector, and use these terminals to crimp onto six new wires of any length you choose, insert them into those positions on the switch connector, and run them wherever you want- https://www.mouser.com/ProductDetai...zmoIuWKhqPFeWI5hXQapUY7BrjWb&tetid=72GIXGTFGM
That's great info Jimmy07. Thanks! Presumably, I could simply cut these wires after say, 6 inches, and butt connect them to wires I extend to a relay-box right? I think I'm understanding this correctly. Thanks again for the help!
That makes me cringe because I always do everything possible to avoid cutting factory wiring, but yes, if that’s what you want to do, it’ll work.
Or just message PaulVI and pick up the connector from him. Best way to do it IMHO.
I got my harness from him and should have my bussman Aux relay box this week to start installation of my accessories.
Remember the switches are ground switches.
Sent from my SM-G998U using Tapatalk
As much as it's your truck, please don't' hack up the factory wiring. Upfitter jumpers are still fair game IMHO.
Those connectors are cheap enough to build new wires with a solid connection from the header all the way into your engine bay.
QFT. Yes.
Always a good option.
You guys give great advice! I ordered the aux panel. I will agree with Brutal's advice not to cut-up my wiring. I can get the terminals for about $11.00. I'm hoping I have a compatible crimper. Other than the standards, I have an Eastwood kit with a few dies.
Brutal. I am going to see if AlfaOBD (demo version) works with one of the dongles I currently have. If it doesn't I might touch base with you for activation. I appreciate that offer! I'm also ordering an Aux relay box. I'll keep you all updated as the materials arrive! Thanks again! Wayne
Brutal. I am going to see if AlfaOBD (demo version) works with one of the dongles I currently have. If it doesn't I might touch base with you for activation. I appreciate that offer! I'm also ordering an Aux relay box. I'll keep you all updated as the materials arrive! Thanks again! Wayne
I don't see that this was posted anywhere, and it's always best to find a truck VIN with AUX matching your other features, but this AUX switch decoder chart was seen on the sister site 5thgenrams. I don't know the true source, use at your own risk.
