DIY: Add Aux Switches to 19+ Ram 2500 Laramie 6.7L

[Deez_Nuttz]

I FINALLY got a switchbank ordered (and allegedly shipped) from ebay after ordering 2 others from 2 separate dealers and having the orders canceled for not actually being "in stock". Ordered up most of the connectors and terminals. Got the cable ordered from KAOdTECH. The only other major part will be AlphaOBD which I haven't figured out yet because all my devices are MAC

Now I have 2 questions for @Florotory or anyone else who can confirm. I'm guessing the silicone plugs for the spaces not being used on the gray connectors that sit on the outside of the AUX PDC don't come installed in the connector from Connector ID but I didn't see them listed separately in the parts list either. Is there PN for them and is it something that can be added to the posted parts list? I already have all my pieces ordered and hoping to potentially save others from the additional shipping if they can be ordered with everything else.

I read this thread and the other heavily involved thread on the AUX Switches. I don't recall (it's so much to retain) if anyone was leading to a specific relay. I found these on amazon and wanted to see if they would work (part number seems to match several of the photos posted).

Amazon.com

 

[RHD_Godzilla]

272-71583083 should be the part number from mouser, if ordering from somewhere else just take the 272 off the front
and yes that is the correct relay

 

[Deez_Nuttz]

272-71583083 should be the part number from mouser, if ordering from somewhere else just take the 272 off the front
and yes that is the correct relay

I REALLY appreciate all your time and the continued dedication you've put into this thread and the other threads while continuing to answer all of our (repetitive, I'm sure) questions @Florotory ! I'll get those relays ordered and start getting ready to tear this truck apart hahaha. I think I saw a while back that it may be more beneficial to connect to the wires coming from the aux switch at the XY125 connector now. Is that the route most people are still taking to avoid routing wires back through the dash from the actual switch module?

 

[Buckwyld]

I started looking into adding the proximity entry to my truck and that led me to this thread and now I want to install the Aux switches. After seeing everyone talk about the switch panels being on back order I went to my go to place and placed the order on Saturday. They emailed back Monday morning asking if I was intending to order the aux bank(I provided VIN for giggles). I confirmed and they processed the order. Switch arrived yesterday! Now, question is... is @Florotory still doing the harness and did you figure out the gateway harness as well? As it stands, I just have the switch. I don't mind electrical work but, I'd rather support someone else's knowledge.

 

[RHD_Godzilla]

I REALLY appreciate all your time and the continued dedication you've put into this thread and the other threads while continuing to answer all of our (repetitive, I'm sure) questions @Florotory ! I'll get those relays ordered and start getting ready to tear this truck apart hahaha. I think I saw a while back that it may be more beneficial to connect to the wires coming from the aux switch at the XY125 connector now. Is that the route most people are still taking to avoid routing wires back through the dash from the actual switch module?

For me it’s easier to run the harness from the Centerstack through the block off plate on the firewall that you can unbolt. It takes about 5 min to route the wiring without fighting to access the XY connector. However others may feel differently. Just how I did and do it

 

[Deez_Nuttz]

For me it’s easier to run the harness from the Centerstack through the block off plate on the firewall that you can unbolt. It takes about 5 min to route the wiring without fighting to access the XY connector. However others may feel differently. Just how I did and do it

It makes sense that accessing the wires behind the centerstack would be the least labor and probably least stress intensive way to go. My thought was to avoid having the extra wires that had no home other than laying around under the dash and since they were already routed why not use them. I saw that someone posted the PN for the XY connector terminals, so I went ahead and picked those up while I was putting in the order for everything else. I don't mind the extra work if it makes for a cleaner end product.

Is there a PN for the rubber boot that replaces the block off plate when you run the wires through that spot? I thought I saw someone that used one ( I think it's designed for a cable of some sort)

On a side note, for anyone interested, I also ordered the gray plugs that go on the side of the AUX PDC with the associated terminals for them but decided to go a different direction with my available AUX pigtails. Once they arrive, I will send them to whoever can use them if they cover the cost of shipping them out.

 

[Hsestes]

Request help on a part # I have read through this thread and a few others looking for the part #.

I have a '24 Power Wagon and the current button configuration is = Hill Decent | Traction Control | T/H | P Rear | P Front.

 

[jnojr]

I'd love to see someone sell a kit with all of the pieces and parts and all of the soldering and stuff done!

 

[jsalbre]

Request help on a part # I have read through this thread and a few others looking for the part #.

I have a '24 Power Wagon and the current button configuration is = Hill Decent | Traction Control | T/H | P Rear | P Front.

There unfortunately isn’t an aux switch bank that matches that, as there’s never been a PW with aux switches.

 

[Dalton_campbell]

I'd love to see someone sell a kit with all of the pieces and parts and all of the soldering and stuff done!

I had @Florotory make a harness for me and just put it in today. It’s was definitely worth avoiding the headache of sourcing the parts and doing all of the work. I figure he did all of the research and shared his findings so let him make a couple bucks at the same time as saving me trouble. Everybody wins!

 

[RHD_Godzilla]

I'd love to see someone sell a kit with all of the pieces and parts and all of the soldering and stuff done!

Problem is there are so many variations of the switch panel themselves that you'd have to have a bunch of different ones on hand. That would be expensive. I build them for people as they need/want them. Honestly, I wish I could just get my hands on the AUX PDC's then I could prewire it and offer it as an "exchange" program type of deal. The AUX PDC is where the most wiring takes place,

 

[Midnight]

Has anyone had any issues getting the gold colored 63347-1 terminals to lock into the auxiliary PDC. I can get them to go in but when I give them a tug to check them they pull back out. I am not sure what I am doing wrong . Any thoughts?

 

[RHD_Godzilla]

Has anyone had any issues getting the gold colored 63347-1 terminals to lock into the auxiliary PDC. I can get them to go in but when I give them a tug to check them they pull back out. I am not sure what I am doing wrong . Any thoughts?

If they came connected to one another from where you ordered them from, make sure there’s not a small piece sticking up off the top of the terminal. You will need to cut it flush. (Kinda hard to explain)

Also make sure that the flat side of the terminal that gets locked in is flat. The gold terminals sometimes can be tricky but shouldn’t be too bad to put in.

 

[Midnight]

If they came connected to one another from where you ordered them from, make sure there’s not a small piece sticking up off the top of the terminal. You will need to cut it flush. (Kinda hard to explain)

Also make sure that the flat side of the terminal that gets locked in is flat. The gold terminals sometimes can be tricky but shouldn’t be too bad to put in.

Thank you for the information. I will look and see if it is flush at the top and thank you for the excellent steps on how to do this project

 

[RHD_Godzilla]

Thank you for the information. I will look and see if it is flush at the top and thank you for the excellent steps on how to do this project

No problem. I really need to update the thread a bit. I want to do a video on the entire process, but haven’t found anyone in the KC area yet that’s wanting to have it installed.

 

[Midnight]

A video would be awesome. I use to have a lot of family in the KC area but most have either passed on or moved away. I know people have talked about connecting the signal wires to the xy125 connection and I would not recommend doing it that way. Your way is not only a lot easier but you have to pull very hard on the wiring going to the xy125 connection. I used the xy125 connection just for the challenge of doing it but it is diffidently a one and done. Not worth the risk of messing up the factory harness and takes more time. Just do it the way you suggested.

 

[Midnight]

I don't know if this will help anyone but if you have any trouble using the 63347-1 terminal you can use the yazaki 7116403802 as an alternative. It looks just like the oem terminal on my 2019 but I cant speak for other years

 

[RHD_Godzilla]

I don't know if this will help anyone but if you have any trouble using the 63347-1 terminal you can use the yazaki 7116403802 as an alternative. It looks just like the oem terminal on my 2019 but I cant speak for other years

I’ll have to try those on the next harness I build.

 

[Nowheretogojs]

There are quite a few threads about Adding Aux switches and AlfaOBD to our trucks out there. I did hours of reading them and watching numerous videos on it as well as messages back and forth to get this installed on my truck. I wanted to make a DIY for someone else that wants to do it and keep it as factory as possible yet fairly easy to accomplish. Here are the steps from gathering the needed parts , programming the truck.

Updated red jumper wire instruction and part numbers as well as daisy chain instruction This makes the install a lot easier. Thanks to @JustARam22 for pointing out the issues.(10/10/23) I will come back and remove the part numbers no longer needed.
THIS IS BEING DONE ON A 2020 2500 LARAMIE W/6.7L WITHOUT AUX SWITCHES FROM THE FACTORY. PLEASE FOLLOW THIS AT YOUR OWN RISK!!!!
Thank you to:
@Brutal_HO
@Jimmy07
@Harrisons Garage
@Atty
@elephantrider
@BighornHDRam
Hopefully I didn't miss anyone, if I did, please just send me a message and ill add you to the list.

STEP 1: Parts needed (some part numbers may change over time)
I will attach a spread sheet with parts and cost to this as well.
-Correct switchbank for your particular truck. My part number was: 68376644AE (tow/haul, Exhaust brake, FR/RR park sensors and 6 aux buttons)-$180.

TOOLS:
-Wire diagrams
-Wire Strippers
-Wire Crimpers
-Socket set
-Heat gun


Wiring needed.
-12ga wire red and various color
-14ga wire various color
-20GA 1ft each red,blk and org (i used yellow cause it's what I had available)
-22ga approx 5ft each - 6 different colors
-Wire loom of your choice. I prefer the mesh over the plastic.
-Heat Shrink
-Electrical Tape

Connectors:
-1456989-3 from digikey for jumper harness into back of switchbank
-1419167-1 from TE Connectivity for jumper harness into OE harness
-CID1044-6.3-11 from Connector ID for gray Aux plug on side of AUX PDC
-CID1044-6.3-21 from Connector ID for Female plug on side of AUX PDC
-CID3083 wire seal for gray plug on side of Aux PDC

Terminals:
-CID100-6.3-MS3 from Connector ID for Female side of gray plug (side that won't get used till you add an Acc),
-272-7116414202 from Mouser Electronics for the male side of the gray AUX plug on side of Aux PDC. (plug that wires into AUX PDC)
-63347-1 from Digikey for that goes from Relay switch fuse to 86 terminal of relays
-42475-2 from DigiKey for jumper wire in aux PDC
-180351-2 from Digikey for Jumper Wire in AUX PDC
-571-v23540x7000y21 from Mouser Electronics, pins for plug of jumper harness to back of switch bank
-1438299-4 from Digikey to pin plug that will go to Factory harness from jumper harness.
-Fuses ( i got from amazon)
-871E-1a-d-r1 U19 relays, you will need 5 of them. As of right now they are hard to get. I got them from eBay @$15/2pk

Step 2: Building the Harnesses:

Jumper Harness:
Jumper to OE Harness:
You will need Approx 1ft of Red, Blk and Org 20GA wire along with 3 male pins (pn: 1438299-4) and Black connector (PN: 1419167-1) .
- Put the loom over the wire, tape each end of the look and then Heat shrink it
- Use wire strippers to strip off enough insulation to crimp it to the pin.
-Crimp wire and Pin together ( just an example, I cleaned up the crimp before pinning it)
View attachment 51163
-Repeat that for the other 2 wires.
Should look like this when done. ( I didn't have ORG wire so i used yellow)
View attachment 63220
The other end of the wires will go into the connector in the next step.

Jumper harness to back of switch bank:
You will need Approx 5-6ft (maybe less) of 6 different color wire. (I used YW, Beige, WH, Blue, Purple, and orange)., 9 pins PN: 571-v23540x7000y21 and connector 1456989-3
-Put the wire loom over the wires leaving about 2-3in at the connector end and about 6in at the end that will plug into PDC when done. Tape it and Heat shrink it.
-like the other plug you will strip away just enough wire to crimp them to the terminals. Repeat this step 9 times.
-Crimp the terminals to each wire (9 of them)
-Insert each pin into the correct location per the diagram. Should look like this when done.
View attachment 51165
When this step is done you should have the black plug with 3 wires in slot 6,7,8; the other end of those 3 wires should be plugged into the light gray connector in slots 6,7,8. You should have 6 different colored wires coming out of the light gray connector pins 2,3,10,11,12 and 13. The other end of those 6 wires should be blunt cut for now.
View attachment 51166
Jumper harness from Switch bank to Aux PDC is now done and ready to plug in behind the switch bank.
View attachment 51167

Jumper Wire in PDC:
For this you will need 6 pieces of 12ga wire (red) cut to approx 4.5" in in length; 6 terminal PN:272-7116414202; 6 terminal CID100-6.3-MS3.
One end of the wire gets the Male terminal, and the other gets the Female Terminal.
Jumper wires should now be done and look like this:
View attachment 63669


This will end up going from post 30 on the relay to the Fuse. 1 per aux switch

Daisy chain for Relay switch fuse to post 86 on relays:
You will need 7 pices of 18ga wires 1 approx 6in long . The other 6 need to be shorter. approx 2.5" each. Then take the shorter wires and solder them evenly spaced to the longer wire. Also, you will need 6 of the Terminal PN:63347-1 and 1 of the terminal PN:272-7116414202. Before I put the terminals on I mocked the daisy chain up in the PDC to make sure they were the correct length so that they were not too long or too short. Then I crimped the terminals on.
-Strip off just enough wire to crimp the male Terminal to the end of the wire. This is basically what it should look like before you have the Terminals on. The male terminal will go at the end at the top of the pic, the rest will be the gold colored terminals part number: 63347-1.
View attachment 63670


Will Continue in reply section. Only allows 10 attachments so I cant do it in one long post. I will Add to this once I do the install as well.

I need to ask. The CID part you used for the PDC jumpers look to be the exact terminal used from the factory, why didn't you use the CID/yazaki parts for the rest? Seems like that what FCA used..

 

[RHD_Godzilla]

I need to ask. The CID part you used for the PDC jumpers look to be the exact terminal used from the factory, why didn't you use the CID/yazaki parts for the rest? Seems like that what FCA used..

At the time some of the pins were not available or out of stock. Anytime I build a harness now i use updated connectors. Only one I haven't used yet is one listed in a previous post from the other day which ill order some next time i build one. I believe all the pins now are Yazaki.