Aux Switch Install

Another awesome and involved upgrade this week - today I swapped my factory piano key style switches for the factory Aux switch assembly. I will post part numbers for all the important bits below. As usual, feel free to hit me up with any questions in the comments below. Remember to like the video and subscribe to the channel with notifications on for more!
Mopar Switch Instrument Panel: 68376644AE $155.84
Relays x6: 871E-1A-D-R1 U19 - you can get these on Ebay direct from china $31.47
Security Module Bypass SKU: BY19HD from KAOdTech - www.kaodtech.c... $55.00
OBDLink EX FORScan OBD Adapter - www.obdlink.co... $49.95
T Taps: tinyurl.com/mr... $10.90
18 AWG wire: tinyurl.com/9w... $23.48
10 AWG wire: local Home Depot $10.44
Mini j case fuses: tinyurl.com/2p... $21.84
Large female terminal: tinyurl.com/tp... $2.59
Small female terminal: tinyurl.com/5n... $2.63
Small male terminal: tinyurl.com/5a... $0.66
Large male terminal: local Home Depot $3.41
Total Cost $368.21
Intro: 0:12
Review of Parts 2:01
Summary of Fuse Box 4:24
Connecting the terminals 6:49
Wiring Diagram 9:33
Swapping the Switch Panel! 11:21
T Tap How To 16:09
Security Bypass Module 22:25
Updating with Alfa OBD 25:51
It Works!! 35:50
Music: Talky Beat by Twin Musicom is licensed under a Creative Commons Attribution 4.0 license. creativecommon....
Source: www.twinmusicom....
Artist: www.twinmusicom...
Disclaimer:
Due to factors beyond the control of Harrison's Garage, I cannot guarantee against improper use or unauthorized modifications of this information. Harrison's Garage assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Harrison's Garage recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Harrison's Garage, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Harrison's Garage.

[@JoseRodriguez-eg2ho]

This video is the only video that has not left me with too many more questions! great work! Thanks for your time in putting this together! I could actually feel the excitement in your voice when that light bar turned on! The fruits of all that labor!

[@HarrisonsGarage]

Glad it helped. I was always left with more questions than answers as well, so I thought I'd take all my research and put it together in this one video.

[@jerardo8012]

Finally got my done after a year of waiting the only issue that I had was with the USB it wasn’t connecting to my laptop. I’m not sure if it was a USB or what it was but I also bought the OBD link MX plus and it was able to connect to it a lot more easier versus with the USB anyways it’s always good to have a second option just in case, but I appreciate all the help and you made this very simple and easy

[@HarrisonsGarage]

Glad my video helped!

[@rjterry21]

Good info. FYI, Aux PDC is present only on Diesel trucks (due to cabin heaters) or factory AUX optioned gas trucks. Gas trucks without the AUX option do not have this Aux PDC already installed.

[@HarrisonsGarage]

Thanks for clarifying. I realized I was a bit vague when I watched the video back. I should also add to my knowledge that this is true for 5th gens... not sure about 3rd or 4th.

[@Frankwh0a]

How do you determine if a gas truck is factory Aux optioned?

[@rjterry21]

@@Frankwh0a It has 6 AUX switches below the standard switches (below radio and option dependant). There is no AUX option that does not include the switch panel.

[@cobbittycavoodles712]

G'day, phil from Sydney Australia. just bought a laramie 3500 and want to do this. thanks for an indepth video. just bought the switch and alfaobd. take delivery of the truck(we call them utes) next week. Look forward to having a go at this conversion. The ram is such a beautiful interior i couldnt bring myself to putting after market switches in it. Thanks again liked and subscribed...hope it helps

[@HarrisonsGarage]

Glad you found it helpful. I had the same thought. Didn't want to sully the interior with aftermarket switches. Just be patient working in the pdc fuse box and you'll be golden. I'd say plan to work 1 long day or 2 moderate ones to get the project done.

[@Juicey3887]

Awesome video wish I would’ve found this before I bought my switch pros for my 21 ram Just like the factory look May have to send it back lol

[@Juicey3887]

How many femal and male terminals do I need?

[@HarrisonsGarage]

@@Juicey3887 I believe I got like 14 of each of the larger ones and the female smaller one and 3 of the male smaller terminal. Never hurts to have a few extra.

[@Juicey3887]

@@HarrisonsGarage thank you for the reply great video

[@lizanoservices]

Also video can you share parts and harness please I mean link

[@Tazyz]

Yooo i was like he got 3 arms lol

[@claudiaferreira3155]

Super helpful 👌

[@shadow_pasta_boi4897]

I saw your truck while walking to school, it had a yt thing on the back

[@Reflex8818]

Doesn’t Mopar offer this whole “Kit with everything including wiring, fuses etc?”

[@HarrisonsGarage]

Not that I found at least not two years ago when I set about doing it. When I looked into it not only was there no kit but I was told by multiple dealers that it was impossible if my truck didn’t come with them.

[@PrestonGladd]

Why not just get an SPOD or something equivalent? Less time and energy with more functionality.

[@HarrisonsGarage]

@@PrestonGladd certainly true. However my objective with this was to make it as factory looking as possible. I really wanted to keep the factory switch bank rather than have a switch pro or similar. If I did it again I’d go with a switchpro for the added functionality. I did this on my new truck and am glad I did. The install was much faster.

[@davidyang7930]

Nice!

[@LeeDavis-fh6mh]

Can this be don't on 2023 with air suspension? Would need a switch that has that on the top switches

[@j.estrada7090]

Nice video Would this work on a '20 Ram 1500 Hemi and does it have to be that specific Aux switch part or any other one that comes close to my original toggle switches. Thanks again for the awesome video

[@HarrisonsGarage]

Since it's a hemi, I don't believe you'll have the PDC (fuse) box under the hood so you'd probably have to source a fuse box as well. You'll also want to check the plug behind your piano style controls to ensure you have your 6 signal wires coming from it. As far as part number goes, there's a chart I found at hdram forums here: hdrams.com/forum/index.php?attachments/1621983175046-png.16833/ You'll have to create an account/ sign in but it's free. The chart displays what the part number will be given which features you need.

[@markbales7782]

Hey great video…have you tried enabling the Mopar factory step option on to the 12" screen and then see if it will deploy your amp steps?.

[@HarrisonsGarage]

I honestly didn't know that was an option. I'll look into it. Right now my steps open whenever my doors do and I haven't had a need for anything else

[@justinmjensen]

That would be cool.

[@rodrigocarrillo9126]

Can you be more specific on how that works ? Or if there is a video to follow

[@okjd159]

You should not use household wire under the hood as the insulation is not designed for the heat generated there. You can get automotive grade "TXL" at Amazon also more flexable. Otherwise a great video.

[@HarrisonsGarage]

That’s some great info - I didn’t realize it could be had on Amazon that easily. I did realize the wires I was using were stiff and the sheathing want the best and made sure to run it far from any of the main heat sources. Had I known to look for TXL at the time I definitely would have gone that route.

[@ddew677]

TXL is actually a thin polyethene insulation with low abrasion but high heat rating (125C). Despite this high heat rating, most underhood temperatures can reach beyond 125C especially in turbocharged applications. Always run your wire away from heat sources and check for an abrasion free environment. Most wire rated for 75C or 90C will be appropriate for automotive work as long as it is jacketed.. If there is concerns about heat, upsize the wire awg for your application and de-rate if it is placed next to other current carrying conductors

[@okjd159]

@@ddew677 Have you seen what house hold wire does in those condition? Manufactures are required to use TXL.

[@kodycottrell9483]

Awesome in depth video. Might be a silly question but will this work on the 1500 modle eco diesel. I have the same piano key setup as yours. Cheers!

[@HarrisonsGarage]

Since you have the eco diesel i don't see why it would differ too much. I'd first check that the pdc in the engine bay is in the same spot and ensure with the free version of alfa obd that it looks like it will connect to your truck.

[@kodycottrell9483]

@@HarrisonsGarage thank you for the reply

[@colinreese4212]

Where did you get the schematic for the aux wires and box. Does ram sell wiring harness as a kit?

[@HarrisonsGarage]

I used the pdf of the pdc box as a starting point and designed my own schematic. I didn't by a pre made wiring harness but rather put together my own. Happy to walk you through it in more detail if you DM me on Instagram at Harrisons.garage

[@nicholasdoolin8659]

How did you chase down which wire was connected to each switch? Plugging in the light bar to each of the 6 red leads coming out of the PDC while toggling each switch in the cab to see which one powered up? I guess you could also use a multi-meter and test for 12VDC on each lead while you toggle the switches and ground to the frame.

[@HarrisonsGarage]

You're correct. I used a multi meter like you described. Checked each one to see which of the uconnect wires I connected the T Taps to activated which switch prior to reinstalling the 12" screen.

[@nicholasdoolin8659]

@@HarrisonsGarage Thanks for the quick reply. Did you do this before you connected the white wires from the T taps into the PDC? Did you need to configure/enable the switches in AlfaOBD to do this or were you doing this some other way?

[@HarrisonsGarage]

@@nicholasdoolin8659 you'll need to activate the switches using alfa obd then use the multimeter to ping them but this is definitely a bit difficult (using alfa obd with the Uconnect unplugged scares me a bit) . Alternatively, and more easily, you can simply let the order of the switches be random, assemble it all, activate with alfaobd and then ping the fuses 1 at a time. Then just note what fuse is what and you're good to go. The fuses in the fuse box will be in different orders than factory trucks but that doesn't matter.

[@nicholasdoolin8659]

@@HarrisonsGarage Right, that was what I was wondering. You’d know which Red wire off the PDC went to what aux switch but the fuse order in the PDC would not match the factory diagram. To remedy that, I’m thinking could you just activate the switches before you wire up the control wires into the PDC and probe each of the white wires and insert into the correct spot that way, right?

[@HarrisonsGarage]

@@nicholasdoolin8659 you probably can. I just chose not to because the dealing with the uconnect when it was out was a bit cumbersome. I just remade the factory diagram with a new numbering order so I knew which switch was which fuse and keep that new diagram in the glove box

[@dadcooksfood9956]

I would love to find the factory wiring harness. I know that I could wire it up like you did, I would just prefer to have all the factory connections. So that down to road if I sold the truck it would have all factory wireing. Should someone want to do something the factory wireing diagrams would apply.

[@HarrisonsGarage]

I suppose it's possible but would be a lot more difficult since the factory harness has another stop to make at the XY125A connector down near the gas pedal. That connector is loaded with other connections and hard to access. Also when I was looking at this I ruled out the factory harness because it was very expensive (Cost more than the entire install).

[@dadcooksfood9956]

@@HarrisonsGarage thanks for that. Do you know if the wires you tapped into connect to anything else? If not I would like to just cut them and use a butt connector.

[@HarrisonsGarage]

@@dadcooksfood9956 i can't recall for certain if the wires i trapped are connected to anything. My sense would be no and that they would be connected to the factory harness if the truck came with aux switches. I suppose you could always cut 1 and see if you lose any functionality and use a but connector to reconnect it if you did.

[@siliconvalleyracing5370]

this should work if I have the 8.4 inch screen right you may not know but worth a shot asking 2019 5th gen in laramie?

[@HarrisonsGarage]

I don't know for certain but I don't see why it wouldn't work since you're not tapping into anything connected to the uconnect.

[@trigger8152]

What happens if I don't have park sense? Can I Just order one without those switches?

[@HarrisonsGarage]

Of course. If you tell me what you do have (tow/haul, trailer height, exhaust brake, etc) i can provide the part number you'll need

[@jamesashmen4984]

Hey man, Where did you purchase the upfitter switch?

[@HarrisonsGarage]

I googled the part number (68376644AE) and ended up buying it directly from a mopar store. Some auto parts e stores may have it as well (like Tasca parts) if it is backordered on the dealer websites.

[@colinreese4212]

Great video. My 22 3500 was ordered without aux and the error can not be fixed so this install must happen. Really lost and no deal help. I have the switch part number but not wiring numbers. Do you have that?

[@HarrisonsGarage]

DM me on Instagram at harrisons.garage I'm happy to walk you through the process in more detail

[@mike1copeland]

I'm in the same boat. Dealer says MOPAR will not, or can not, sell the parts. They won't even give me the part # for the 2022 3500 Aux switch. So, is there a difference? They look pretty much identical to the video.

[@chevy-anda-jeep]

Do you need to use a laptop? Or can you do it on the computer first?

[@HarrisonsGarage]

You can use a laptop, iPad or phone to run alfaobd to program the switches. I used my laptop because I felt more comfortable with the larger screen.

[@zackh3195]

Anybody aware of the part number for a aux switch bank with just tow/haul and exhaust brake. I have a tradesman and would like to do the factory switches

[@HarrisonsGarage]

Should be 68376638AE. I believe this part number has since been replaced by 68596336AA. You can buy it online (store.mopar.com/oem-parts/mopar-instrument-panel-switch-68596336aa?c=az0xJnE9NjgzNzY2MzhBRQ%3D%3D) or through your local dealer.

[@rodrigocarrillo9126]

The part number only came with the switches ? Wiring , fuses and other accessories were separate ?

[@HarrisonsGarage]

That's correct. You'll need everything in the description to get this working. Assuming you have a Ram 2500/3500 diesel you will already have the fuse box (pdc box) under the hood but it will be mostly empty. You'll need to source your own relays, terminals, connectors,etc. I've got links for each in the description.

[@rodrigocarrillo9126]

@@HarrisonsGarage awesome thank I appreciate all your work in putting everything together. I have the same year truck. Also a diesel 2500 but on the Mopar website it says that this part does not fit my vehicle. Is that normal/ you saw the same thing and it fit on yours ?

[@HarrisonsGarage]

@@rodrigocarrillo9126 that's correct. It says it won't fit because your truck didn't come with the wiring harness from the factory. However that part will fit and will still control your parking sensors, exhaust brake (you have to swap your exhaust brake controller to the new unit) and trailer brake as normal. Once you wire up the pdc box and splice into the wires as i showed in the video it'll control the aux switches as intended as well.

[@rodrigocarrillo9126]

@@HarrisonsGarage thank you once again you gained a subscriber 👌

[@juanalfaro4396]

Anyway you can help me find part # for the aux panel for 2022 2500 Laramie. My panel I have now has brake control, towing, traction, front and rear parking. Can't seem to find part # for panel with these buttons and AUX. Thanks

[@HarrisonsGarage]

Had the same question this morning for the same set up. The closest I think you'll get is this. 68376647. Rather then 6 aux switches, it has 5aux switches and a switch for PTO which can be used as an aux switch i believe but not positive.

[@juanalfaro4396]

I tried that part number but says not for year model 2022 Ram 2500. Showing for 2021 model but not sure it would still work for 2022

[@HarrisonsGarage]

@@juanalfaro4396 I think it will. When I did mine the website said it wouldn't fit but that is only because my truck didn't come with the aux switches. The physical opening fit the switches is the same.

[@josephmattis2636]

Awesome thanks. Was wondering where you got the diagram from and was it a download. The link would be great. Also was there any problem with the existing switch button layout, my tow haul and exhaust brake flipped between the two bank modules. Any help would be greatly appreciated

[@HarrisonsGarage]

Are u talking about my wiring diagram (visible at 9:42). I made this and can send u a jpg. Hit me up on Instagram @harrisons.garage with your email address and I'll send it to you. I didn't have any issues with the existing features swapping buttons. That's a new one for me unfortunately. Only thing I can think of is that maybe the new switch assembly your using isn't the correct part#.

[@josephmattis2636]

Thanks for the reply. I was wondering what pin was used from the fuse. Also I was able to pause the video and was able to draw the diagram. Thanks again

[@HarrisonsGarage]

@@josephmattis2636 no problem. Any other questions feel free to ask.

[@josephmattis2636]

@@HarrisonsGarage what relay pin to use from the fuse,inside or the outside. Thanks

[@HarrisonsGarage]

@@josephmattis2636 in general power in (from the fuse) will be to the pin labeled 30. Power out (to your accessories) will be pin 87. Signal power (the small gauge white wire in the video) is pin 86 and pin 85 is ground.

[@jerardo8012]

Hey man I have a quick question for you I know you put all the links of the stuff that you purchased but when I was watching your videos you kept on saying something about alpha OBD2 link EX I just wanna make sure that the one I purchase is the correct one I purchase the one that is on your description which is the OBD2 link EX. That is really my only concern. And I also appreciate that you made a video like this because I almost bought the switch pros I want to keep something that looks factory I’m glad I didn’t purchase that because I’m saving about 300 to $400. The one thing I did notice right now is that the auxiliary are on back order

[@HarrisonsGarage]

Glad you found it helpful. The OBD2 Link Ex is only needed if you plan on using your laptop to interface with the truck (as opposed to your iphad or phone. Your phone/ipad would require a different OBD interface that broadcasts a wireless signal. I used my laptop because that's what I was most comfortable with. The OBD2 Link Ex link should work with your truck. The Security bypass module is more vehicle specific. The one in my link will work for 5th gen rams.

[@jerardo8012]

@@HarrisonsGarage Ahh okay, I see what you mean. I feel like I’ll be more comfortable using a laptop versus my phone. Thanks again for responding back in a timely manner. Just one more question will this also help me with me installing LED OEM tail lights and if I were to put a 12 inch Uconnect screen as well

[@HarrisonsGarage]

The alfa obd program is very powerful and will likely be able to turn those features on for you but be careful. If you do something incorrectly you can brick your truck. I reached out to the people at alfa obd through their website to confirm the process before each procedure. They were very helpful.

[@jerardo8012]

@@HarrisonsGarage thats for all the info buddy. Appreciate all your help. Ill get in touch with them

[@flyingjoed]

Does a notification pop up on the dash when you turn on each AUX? If so, can you name them so like "Rock Lights" or "Front Light Bar" etc pops up when activated?

[@HarrisonsGarage]

I wish it did. Honestly that’s a good idea for Ram to implement. I just have to remember which is which. Though to be honest I did end up driving down the highway in the middle of the day once with my rock lights on wondering why my compressor hasn’t switched on haha.

[@flyingjoed]

​@@HarrisonsGarage Haha!

[@flyingjoed]

​​@@HarrisonsGarage Great video and tutorial, btw! Subbed and liked. Just ordered my aux switches through a guy in the 5th gen 2500/3500 fb group for $125 shipped. May be able to complete this thing for around $250ish thanks to you and him! So thank you!

[@HarrisonsGarage]

@@flyingjoed awesome man. Good luck with the install. I’d allow yourself 2 full days to get it done just in case if this is your daily driver.

[@flyingjoed]

Thanks buddy

[@HennyTRX3773]

Would this be the same for the hemi minus the brake

[@HarrisonsGarage]

Yes I assume it would be. If you DM me on Instagram @harrisons.garage I can send you the part number matrix. Do be aware though that with a hemi I don’t believe your truck comes factory with the pdc box under the hood.

[@HennyTRX3773]

@@HarrisonsGarage I just added/ dm you

[@kenricsmith2517]

Will this work on a tuned Ram?

[@HarrisonsGarage]

I can't think of any reasons why it wouldn't. The aux switch assembly shouldn't interact with any of your tunes.

[@R7Lyfe]

Does this work on a 2022 Ram 2500? The AlphaOBD

[@HarrisonsGarage]

I'm not sure what the compatibility is like for 2022 but I'm sure you can connect the software developers on the alfa obd website. They're very responsive.

[@R7Lyfe]

@@HarrisonsGarage okay, thank you for replying so quick. I’d like to add a lightbar but don’t have the factory aux switches and don’t really want to go with an aftermarket one. I’ll contact them and find out. Thanks.

[@jameslarson8640]

Still working with no issues?

[@HarrisonsGarage]

Absolutely! It's turned out to be one of the best and cleanest upgrades I've ever done

[@jameslarson8640]

​@@HarrisonsGarage how long did it take for the relays to get to you? i tried finding some US located ones but there arent many options/not spending $20 per fuse

[@HarrisonsGarage]

@@jameslarson8640 it wasn't too bad. I want to say it took something like 3 weeks or so. I had some other projects I knocked out while waiting on them so it didn't feel so bad.