How To Add Heated/Ventelated seats and Heated Wheel to Express/Tradesman

[WilliamS]

If someone has a tool near me, or not near me Ill pay for it to rent it for a day. We can work something out. This is going to keep me up all night. I might have a gap claim on my truck soon if this continues to fight me.

 

[00R/T]

Just curious, Have you ever seen any settings in the BCM or HSCM for the vent function utilizing your Tool? I have the tool now but haven't had a chance to play with it yet. I know Rick put the buttons on his screen with it. Did he do that in the BCM or the radio itself?


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Yeah, there's an option in the BCM. That's what Rick turned on to get the soft keys on the RA4. The hard keys worked without him configuring anything, though, so we've been under the impression that the settings only get looked at by the radio.

I didn't realize you picked up the AE tool. You should be able to connect to the CSWM and check for faults. You can also command the seats on from there.

 

[12sportmc]

The only variable that is different here from Ricks install is that neither of you guys have the wheel hooked up yet. I haven't looked into the schematics yet but is it possible there is a feedback circuit or something that needs to be reported that can't because the wheel is not hooked up? Just a thought and I could be way out in left field as I haven't looked at the wiring yet , but It could be your missing link....literally lol


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[00R/T]

Adding Heated/Ventelated seats and Heated Wheel to Express/Tradesman

If someone has a tool near me, or not near me Ill pay for it to rent it for a day. We can work something out. This is going to keep me up all night. I might have a gap claim on my truck soon if this continues to fight me.

We don't yet know what the issue is or if a tool can even help. You have to remember that what we're doing is unsupported. As of just a few weeks ago, the general consensus was that this was not possible at all. There can be variations between years and trim levels that we don't know about yet. I know it's frustrating, but at this point failure is very much an option.

In general, I would caution anyone who is thinking about investing in seats based on the belief that they'll be able to get everything working. It's just too early for anything to be guaranteed.

 

[WilliamS]

The only variable that is different here from Ricks install is that neither of you guys have the wheel hooked up yet. I haven't looked into the schematics yet but is it possible there is a feedback circuit or something that needs to be reported that can't because the wheel is not hooked up? Just a thought and I could be way out in left field as I haven't looked at the wiring yet , but It could be your missing link....literally lol


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Well that would suck, but if its part of the data network it could be looped to finish the circuit.

 

[12sportmc]

Well that would suck, but if its part of the data network it could be looped to finish the circuit.

Not sure how hard it would be for Rick to unplug his wheel from the connector he had to populate on the opposite side of the column harness and see what happens but that would a surefire troubleshooting step. [emoji848]


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[WilliamS]

Someone go poke him, we need him!

Out of my own punishment, are the wires populated on the bighorns for this, or is this when I need to become a wiring mechanic

 

[00R/T]

The only variable that is different here from Ricks install is that neither of you guys have the wheel hooked up yet. I haven't looked into the schematics yet but is it possible there is a feedback circuit or something that needs to be reported that can't because the wheel is not hooked up? Just a thought and I could be way out in left field as I haven't looked at the wiring yet , but It could be your missing link....literally lol


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From an electrical standpoint, they're completely different systems and the only reason there would be a dependency is if the software implemented one. This is Chrysler we're dealing with here, so that wouldn't surprise me at all. When I put my heated seats in, they simply wouldn't work. They would come on and turn right back off. Same thing with the wheel. I tried everything and was getting nowhere. After I swapped out my OEMAuto bezel for the factory 8.4 one, everything worked. I don't know if it was the addition of the new parts or if it's because the battery was disconnected for a few hours, but it's worked ever since.

These trucks are weird and nothing surprises me any more.

 

[12sportmc]

From an electrical standpoint, they're completely different systems and the only reason there would be a dependency is if the software implemented one. This is Chrysler we're dealing with here, so that wouldn't surprise me at all. When I put my heated seats in, they simply wouldn't work. They would come on and turn right back off. Same thing with the wheel. I tried everything and was getting nowhere. After I swapped out my OEMAuto bezel for the factory 8.4 one, everything worked. I don't know if it was the addition of the new parts or if it's because the battery was disconnected for a few hours, but it's worked ever since.

These trucks are weird and nothing surprises me any more.

Yeah. That's what I was basing my logic on lol. Seen some super stupid discrepancies in the helicopter wiring world and they all lead to some software update or FCC protocol remapping that needed to have X and Y report back within whatever millisecond timeframe and if connector "w" was loose or off it couldn't accomplish the PBIT. Sending false codes to to AMC and shutting off the systems. Worth a shot, worst case the seats still don't work


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[00R/T]

Not sure how hard it would be for Rick to unplug his wheel from the connector he had to populate on the opposite side of the column harness and see what happens but that would a surefire troubleshooting step. [emoji848]


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It's not that simple. That's only the heating element side of things. The other part of the heated wheel system is the temperature sensor inside the wheel. That goes to the right front switch, which sends the value to the SCCM (clockspring) over a LIN bus and the SCCM in turn reports the value to the CSWM via CAN-IHS.

 

[Ricks Ram]

As I stated in my post my cooled seats worked without any codes being installed. I was shocked that it did. I installed my wiring exactly as factory. The only difference in mine is I ran my own relay wich should make no difference and I have my heated wheel hooked up. The truck is picking up the seats or the heated function would not work at all. I agree with 00/RT. I would lean towards the heated wheel possibly being the issue. The heated wheel seems to be the only constant here.

 

[12sportmc]

It's not that simple. That's only the heating element side of things. The other part of the heated wheel system is the temperature sensor inside the wheel. That goes to the right front switch, which sends the value to the SCCM (clockspring) over a LIN bus and the SCCM in turn reports the value to the CSWM via CAN-IHS.

If he disconnected the main connector from the wheel itself under the airbag, do you think that would accomplish what we are looking to do?


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[WilliamS]

The thing that would lead me against the wheel is that the heated seats and wheel are a package, not cooled. My seats heat, and the bezel shows that without issue. I know there is a way to make it happen. Im sure the codes can be added somehow. I wonder if that plug in tool that only adds the wheel and seats would work on a bighorn.

 

[00R/T]

If he disconnected the main connector from the wheel itself under the airbag, do you think that would accomplish what we are looking to do?


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It's hard to say. There's still plenty of variables there. To be honest, I'd recommend anybody that has it working to not mess with it unless they absolutely have to.

I think the best test is for somebody who has the seats but not the wheel to get the wheel hooked up and see if the ventilated part then works.

 

[00R/T]

The thing that would lead me against the wheel is that the heated seats and wheel are a package, not cooled. My seats heat, and the bezel shows that without issue. I know there is a way to make it happen. Im sure the codes can be added somehow. I wonder if that plug in tool that only adds the wheel and seats would work on a bighorn.

True, but there are also no trucks with cooled seats that don't also have heated seats and wheel. What you currently have installed in your truck is not a configuration that ever left the factory.

I agree that there shouldn't be a dependency, but that doesn't mean their can't be.

 

[Ricks Ram]

As I stated in my post my cooled seats worked without any codes being installed. I was shocked that it did. I installed my wiring exactly as factory. The only difference in mine is I ran my own relay wich should make no difference and I have my heated wheel hooked up. The truck is picking up the seats or the heated function would not work at all. I agree with 00/RT. I would lean towards the heated wheel possibly being the issue. The heated wheel seems to be the only constant here. When I first turned mine on nothing would eork. I double checked all of my wiring but didn't change a thing. I started the truck up again and everything worked perfectly.

 

[WilliamS]

As I stated in my post my cooled seats worked without any codes being installed. I was shocked that it did. I installed my wiring exactly as factory. The only difference in mine is I ran my own relay wich should make no difference and I have my heated wheel hooked up. The truck is picking up the seats or the heated function would not work at all. I agree with 00/RT. I would lean towards the heated wheel possibly being the issue. The heated wheel seems to be the only constant here. When I first turned mine on nothing would eork. I double checked all of my wiring but didn't change a thing. I started the truck up again and everything worked perfectly.

Would my truck have the wiring, just not the clockspring and wheel?

and your dash bezel lights up for both heated and cooled right?

 

[customcarz973]

How much did it cost you in total for all the parts?

This is my first writeup on adding the Heated/Ventelated seats and the Heated Wheel to an Express or Tradesman. I am shure there will be questions along the way but I will try to explain it as well as I can. As I did on the other thread I want to mention that I did not figure all of this out. 00/RT was able to add the heated seats and wheel to his regular cab Express that came with the wiring from the factory. There is no way I could have done this without his help. I am sorry I keep repeating that but I don't want t take credit for something I didn't figure out. He was very patient and worked with me to figure it all out. We are lucky to have him on our forum. This is not as complicated as one might think and it worked fine without adding any codes. This is the basic setup

Parts you may need. I got all these from Nexus Electronics with part# I got from 00/RT
Big pins for passenger side seat plug part# 7116-4032. You will need one if you are adding just the seat and two if you are going to install the factory inverter.(see post by 00/RT on installing factory inverter)
Small pin for passenger seat harness part# 7116-4021. You will need 5 for the seat conversion and four more if you are adding the inverter.
You will need two pins for the plug that the heated wheel harness enters but does not exit part#7114-4101-02.
You will need the male end of the gray plug for the drivers side seat part#
7283-6388-40 non locking or
7283-6568-40 locking I was able to get the locking version but the other was out of stock.
The pins for the gray plug are part# 7116-4720-02 or
7116-4721-02 I had to special order these pins. I recommend getting the 7116-4721-02 if possible as its for a bigger Guage wire. The main conversion is actually not bad once it's figured out.
You will need to hook up the solid red wire in the passenger side seat in order for the power functions to work. You will take pins 1 through 5 colors are #1 LG/BR #2 BR/LG #3 TN/DB #4 TN/WT #5 LG/VT from the passenger seat plug and run them to the drivers side seat gray plug. Pin# 2 TN/WT 3 TN/DB 5 BR/LG 6 LG/BR and 15 LG/VT. The gray plug also has four more wires we will need to use
Heated Wheel pin# 10 GY/DB and pin# 20 DB/LG These two wires will go to the plug under the dash where the heated wheel harness terminates. We found that all trucks have the heated wheel Harness in the colum so all you will need for the heated wheel is the Wheel/clockspring and steering wheel harness.
Last but not least you will need to connect to the CAN (Controller Area Network) You will tap into the IHS (Interior High Speed) CAN .
This will be pin#12 WT/DB CAN IHS +
And pin# 13 WT CAM IHS-
I attached these two wires to my OBD2 PORT
Pin# 3 GY IHS+ And
Pin# 11 WT IHS-
I just had shoulder surgery so I am going to take the truck to the stereo shop tomorrow to hook up to the CAN permanently. I can't work well under the dash yet. You could leave it hooked up to.tje OBD2 port if you wanted but I decided have them mount it somewhere else. I was worried about hooking up to the can but if you know the correct wires it doesn't seem to be as bad as I thougjt.
The last ptoblem is our trucks do not have the correct ignition on run power supply to run power to the heated seat module. Because of this we need to run a relay into the truck. For this I ran a fused 16 Guage wire from the bsttery into the truck under the seat to a 40 AMP relay. I found a suitable trigger sorce in another harness near the same Harness that the Heated wheel harness attaches. You will run two wires from this relay to the two P/Y wires in the YELLOW drivers side seat plug(these wires can only have power when the key is on (RUN). You will also attach a constant 12v sorce to the solid red wire in the YELLOW drivers side seat plug. I am going to attach pictures but if there are any others needed just let me know. I was able to add the codes d
to my control buttons come up on RA4 because I have the tool but it all worked without the codes. You just need to use the hard keys in the switch panel. The first pictures I will post will be of the passenger side seat plug. Obviously I could not duplicate the factory colors but it shows what I did to make it work

 

[cptwing]

Well I will be the next guinea pig as I have everything including the clock spring. I actually would everything already installed if those a##holes did not still have my truck. I am going to install everything at once and see what happens. RT may hit you up for help when and if I ever get my truck back, thanks in advance.

 

[WilliamS]

Well I will be the next guinea pig as I have everything including the clock spring. I actually would everything already installed if those a##holes did not still have my truck. I am going to install everything at once and see what happens. RT may hit you up for help when and if I ever get my truck back, thanks in advance.

When will you be doing this?