How to: Add Dual Zone ATC to a Tradesman

wayned87

Member
Joined
Feb 11, 2014
Posts
53
Reaction score
19
Location
Clinton, UT
Ram Year
2015 Ram 2500
Engine
6.7 Cummins
If anyone is in need of a blend door actuator let me know, I have 3 available. I purchased the "dual zone" harness from eBay and it came with extra actuators. I also have my factory "single zone" harness if anyone would want to use it instead of cutting/splicing or making their own, you could easily pull the wires out of this one and use, i think.

Anyway shoot me a message.
 

elcabong

Junior Member
Joined
May 24, 2021
Posts
2
Reaction score
1
Location
Rigby, Idaho
Ram Year
2016
Engine
5.7l
Hello everyone! This is my first time posting here, but I've been long time reader of many great and wonderful things on this forum and I've finally come to a problem that my research couldn't find an answer to.

I'm not sure any of y'all would have an answer to this but I figure it would be worth a shot. I've got a 2016 Ram 1500 Big Horn, Crew cab, with the 5.7 hemi and I'm looking to do this dual zone upgrade. I've looked at dozens of online mopar parts pages and have boiled down the possible part for the distribution housing to the following 2 options:

68214902AB - 3.0 diesel - $120 shipped
68197463AC - 5.7 and 3.6 - $455 shipped

These are both listed as dual zone distribution housings for the crew cab model, the only notable difference being the engine of the truck (and the astronomical price difference). Normally for me it would be easy to just get the exact part for my truck even if it is a little more, but in this case where it's almost 4x as expensive it's a little hard to justify that much money. I'm wondering if anyone has tried putting this one for the diesel crew cab in their gasser crew cab, or knows someone who would know if the one for the diesel would work for my gasser. I've looked over what pictures I could find of both housing units and everything I can see from them would indicate they are the same (most pages actually use the picture of the one for the 5.7 in the listing for the 3.0). I've even checked to see if the parts attached to it might be different, but the heater core, evaporator core, and the blower fan box are all the same between the two. One of the Mopar parts websites I visited did indicate that the 3.0 diesel housing was compatible with my truck but I didn't want to take their word for it and end up with an extra $120 non-returnable large paperweight.

Anyway, any help or advice would be greatly appreciated, thanks!
 

Jimmy07

Senior Member
Joined
Feb 23, 2017
Posts
2,969
Reaction score
2,463
Ram Year
2017
Engine
6.4 Hemi
Hello everyone! This is my first time posting here, but I've been long time reader of many great and wonderful things on this forum and I've finally come to a problem that my research couldn't find an answer to.

I'm not sure any of y'all would have an answer to this but I figure it would be worth a shot. I've got a 2016 Ram 1500 Big Horn, Crew cab, with the 5.7 hemi and I'm looking to do this dual zone upgrade. I've looked at dozens of online mopar parts pages and have boiled down the possible part for the distribution housing to the following 2 options:

68214902AB - 3.0 diesel - $120 shipped
68197463AC - 5.7 and 3.6 - $455 shipped

These are both listed as dual zone distribution housings for the crew cab model, the only notable difference being the engine of the truck (and the astronomical price difference). Normally for me it would be easy to just get the exact part for my truck even if it is a little more, but in this case where it's almost 4x as expensive it's a little hard to justify that much money. I'm wondering if anyone has tried putting this one for the diesel crew cab in their gasser crew cab, or knows someone who would know if the one for the diesel would work for my gasser. I've looked over what pictures I could find of both housing units and everything I can see from them would indicate they are the same (most pages actually use the picture of the one for the 5.7 in the listing for the 3.0). I've even checked to see if the parts attached to it might be different, but the heater core, evaporator core, and the blower fan box are all the same between the two. One of the Mopar parts websites I visited did indicate that the 3.0 diesel housing was compatible with my truck but I didn't want to take their word for it and end up with an extra $120 non-returnable large paperweight.

Anyway, any help or advice would be greatly appreciated, thanks!
Just realized something with this- the OP of this thread has an eco diesel, which has a PTC cabin heater. It’s just an electric heating element inserted into the box for quicker warm air in cold weather while the engine coolant is warming up. The cheaper box has the hole for that heating element. I suppose if there’s a plastic cover you can fabricate to cover that hole, that box would work fine.
You must be registered for see images attach

You must be registered for see images attach
 

elcabong

Junior Member
Joined
May 24, 2021
Posts
2
Reaction score
1
Location
Rigby, Idaho
Ram Year
2016
Engine
5.7l
Just realized something with this- the OP of this thread has an eco diesel, which has a PTC cabin heater. It’s just an electric heating element inserted into the box for quicker warm air in cold weather while the engine coolant is warming up. The cheaper box has the hole for that heating element. I suppose if there’s a plastic cover you can fabricate to cover that hole, that box would work fine.
You must be registered for see images attach

You must be registered for see images attach

Is that really the only difference? Well crap, for a savings of $355 I'm sure I could find a way to cover that hole. I didn't even realize that was an electric heating element in that picture, but now that you mention it, I'm wondering how hard it would be to add that electric heating element to a truck that doesn't have it and make it work....

And thank you for responding! I feared this thread may have died based on what little has been posted here over the last year.
 

Jimmy07

Senior Member
Joined
Feb 23, 2017
Posts
2,969
Reaction score
2,463
Ram Year
2017
Engine
6.4 Hemi
Is that really the only difference? Well crap, for a savings of $355 I'm sure I could find a way to cover that hole. I didn't even realize that was an electric heating element in that picture, but now that you mention it, I'm wondering how hard it would be to add that electric heating element to a truck that doesn't have it and make it work....

And thank you for responding! I feared this thread may have died based on what little has been posted here over the last year.
It actually wouldn’t be hard at all to add the cabin heater. There are 3 circuits you would add to the BCM, which is wide open when the dash is pulled. All the settings for it are there in AlfaOBD. Here’s a schematic for the 2019+ Heavy duty ram with cabin heat, which is the same. You basically need a relay box for 3 relays and 3 50amp fuses
 

wayned87

Member
Joined
Feb 11, 2014
Posts
53
Reaction score
19
Location
Clinton, UT
Ram Year
2015 Ram 2500
Engine
6.7 Cummins
I would like to add my $.02 in here so that hopefully it helps or saves someone some money or possibly time.

I have a 2015 RAM 2500 SLT Cummins. I have upgraded the truck to a full Laramie, yes all down to the wiring harnesses. (I was able to get my hands on salvage truck parts for cheap).

When I converted my single zone to the dual zone, I originally ordered a complete distribution housing. It was on a very long back ordered and I was tasked to deploy so I had to cancel the order. When I was able to start this project back up, I did a bunch of research and ended up finding this product -

Make sure you click the drop down arrow and select "dual zone".

Once the blend door came in I took my dash and distribution housing out. Took it to the kitchen table (don't tell the wife, but I did put a blanket down so it wouldn't scratch it lol). Completely dis-assembled it via screws and clips, it was actually pretty easy. I took the "single zone blend door" out and replaced it with the blenddoorusa.com "dual zone blend door". Tested the functionality and everything worked.

I had access to the dual zone wire harness and extra blend door actuator. This is the harness that wraps around the distribution housing. I put everything back together and programmed via AlfaOBD, and all worked as it should.

NOTE: I figured since I was already going to have the distribution housing open, I went ahead and ordered the complete blenddoorusa.com kit for our trucks.
At the time I had roughly 55K miles on the truck and the foam on the blend doors was already coming off.

I am sure I am missing a step or two here so feel free to ask away.

So long story short here, I was able to use my original distribution housing and I only changed out the blend doors, wire harness, and added the extra blend door actuator.
 
Last edited:

Ryno1500

Member
Joined
May 11, 2021
Posts
47
Reaction score
20
Location
California
Ram Year
2014
Engine
Hemi 5.7
I would like to add my $.02 in here so that hopefully it helps or saves someone some money or possibly time.

I have a 2015 RAM 2500 SLT Cummins. I have upgraded the truck to a full Laramie, yes all down to the wiring harnesses. (I was able to get my hands on salvage truck parts for cheap).

When I converted my single zone to the dual zone, I originally ordered a complete distribution housing. It was on a very long back ordered and I was tasked to deploy so I had to cancel the order. When I was able to start this project back up, I did a bunch of research and ended up finding this product -

Make sure you click the drop down arrow and select "dual zone".

Once the blend door came in I took my dash and distribution housing out. Took it to the kitchen table (don't tell the wife, but I did put a blanket down so it wouldn't scratch it lol). Completely dis-assembled it via screws and clips, it was actually pretty easy. I took the "single zone blend door" out and replaced it with the blenddoorusa.com "dual zone blend door". Tested the functionality and everything worked.

I had access to the dual zone wire harness and extra blend door actuator. This is the harness that wraps around the distribution housing. I put everything back together and programmed via AlfaOBD, and all worked as it should.

NOTE: I figured since I was already going to have the distribution housing open, I went ahead and ordered the complete blenddoorusa.com kit for our trucks.
At the time I had roughly 55K miles on the truck and the foam on the blend doors was already coming off.

I am sure I am missing a step or two here so feel free to ask away.

So long story short here, I was able to use my original distribution housing and I only changed out the blend doors, wire harness, and added the extra blend door actuator.
Well son of a....my new distribution housing just shipped this morning...

Mine is a 2014 at least so the housing was only $108.00, but twenty bucks is twenty bucks.
 
Top