Wiring for OBS denali seats into an OBS truck

[Nickleahy23]

I picked up some Denali seats the other day...6 way power, lumbar, heated everything...I have the plugs with the wire pigtails on them, but im not sure how to wire them up. I imagine i Have a hot, ground, Ignition(for the heated seat part) and im not sure what else..I wasnt able to find a diagram on here but if anyone can help me out that would be awesome.

[99-2door]

C212 (Crossbody Harness Inline to Power Seat, LH)



Connector Part Information
12129135
4 F M/P 280 Series (BLK)
Connector Part Information
12129136
4 M M/P 280 Series (BLK)

Pin
Wire Color
Circuit No.
Function
Pin
Wire Color
Circuit No.
Function

A
ORN
540
Fuse Output - Battery - Type III Fuse
A
ORN
540
Fuse Output - Battery - Type III Fuse

B
BLK
150
Ground
B
BLK
150
Ground

C
ORN
341
Fuse Output - Battery - Type III Fuse (with Heated Seats)
C
ORN
341
Fuse Output - Battery - Type III Fuse (with Heated Seats)

D
ORN
1840
Fuse Output - Battery - Type III Fuse (with Heated Seats)
D
ORN
1840
Fuse Output - Battery - Type III Fuse (with Heated Seats)

D
ORN
640
Fuse Output - Battery - Type III Fuse
D
ORN
640
Fuse Output - Battery - Type III Fuse


C229 (Crossbody Harness Inline to Power Seat RH)



Connector Part Information
12064752
6 Way F Metri-Pack 280 Series (BLK)
Connector Part Information
12064754
6 Way M Metri-Pack 280 Series (BLK)

Pin
Wire Color
Circuit No.
Function
Pin
Wire Color
Circuit No.
Function

A
ORN
1840
Fuse Output Battery - Type III Fuse
A
ORN
1840
Fuse Output Battery - Type III Fuse

B
--
--
Not Used
B
--
--
Not Used

C
ORN
540
Fuse Output Battery - Type III Fuse
C
ORN
540
Fuse Output Battery - Type III Fuse

D
BLK
150
Ground
D
BLK
150
Ground

E
BRN
341
Fuse Output Ignition 3 Type III Fuse
E
BRN
341
Fuse Output Ignition 3 Type III Fuse

F
YEL
182
Heated Seats Control Module
F
YEL
182
Heated Seats Control Module

[Nickleahy23]

Thanks a lot man..so in other words...Orange goes to battery, black to ground on the LH seat.. on the RH seat orange goes to battery, brown to ignition, black to ground...What is this heated seats control module? Do i need something else to run the heated seats other then just wiring them up?

[99-2door]

Yeah, I was trying to find more about that yellow wire.

Kinda seems odd on the driver's side that it doesn't have a switched power for the heated seats.

[99-2door]

Heated Seats Circuit Description
Heated Seat System
The heated seat system incorporates a heated seat switch, heated seat module, seat temperature sensor, heating elements in the seat cushion (front and rear) and heating elements in the seat back (front only). All the passengers seats (front and rear) have a seat belt switch that is used for an enable signal when the seat belt is buckled.

Front Heated Seat Description
The front Heated Seat Switches receive power, with the Ignition in the Run position, from the RR HVAC fuse in the I/P Fuse Block through CKT 341 (BRN). When the switch is placed in the LOW position, the ON signal is sent to the Heated Seat Module through CKT 1503 (PNK/BLK), and the HIGH/LOW Signal is sent through CKT 1505 (LT BLU/BLK) to the heated seat module. The low side of the Heated Seat Switch has approximately 275ohms of resistance, while the high side has approximately 310ohms of resistance. The Heated Seat Module receives battery voltage from the FRONT HEATED SEATS fuse, in the underhood fuse block, through CKT 1840 (ORN). With the heated seat switch on, battery voltage is sent from the module through CKT 1462 (LT BLU) to the Seat Cushion Element. Output is sent through CKT 1985 (PPL) to the Seat Back Element. Since the elements are connected in series, ground for both elements is provided through CKT 150 (BLK) to ground G202. The temperature sensors for the seats are located with the seat cushion element. The sensor monitors seat temperature and a varying resistance that is monitored at the Signal Enable, cavity E of the Heated Seat Module. The Heated Seat Module compares this signal to the HI/LO input to determine when to apply and shut off battery voltage to the heating elements. Temperature settings are maintained around:

37.5°C (98.5°F) for the LOW position.
42.5°C (107.5°F) for the HIGH position.
Both the Driver's and Passenger's, heated seats operate the same. However, the Passenger's seat needs seat belt buckled. When the seat belt is not buckled, the enable signal through CKT 182 (YEL) is grounded at the heated seat module and the system will not operate.

...........................

Well that explains the yellow wire.

[99-2door]

There should be a Brown wire for the left front seat that needs hot in RUN. Don't know why that first list didn't show it.
That's all I've got for now.

[Nickleahy23]

Thanks alot man youve been a big help..at least i can get them in and be able to move them for now..Ill have to figure out the whole heated seat part

[yellowfiero88]

Originally Posted by 99-2door

Heated Seats Circuit Description
Heated Seat System
The heated seat system incorporates a heated seat switch, heated seat module, seat temperature sensor, heating elements in the seat cushion (front and rear) and heating elements in the seat back (front only). All the passengers seats (front and rear) have a seat belt switch that is used for an enable signal when the seat belt is buckled.

Front Heated Seat Description
The front Heated Seat Switches receive power, with the Ignition in the Run position, from the RR HVAC fuse in the I/P Fuse Block through CKT 341 (BRN). When the switch is placed in the LOW position, the ON signal is sent to the Heated Seat Module through CKT 1503 (PNK/BLK), and the HIGH/LOW Signal is sent through CKT 1505 (LT BLU/BLK) to the heated seat module. The low side of the Heated Seat Switch has approximately 275ohms of resistance, while the high side has approximately 310ohms of resistance. The Heated Seat Module receives battery voltage from the FRONT HEATED SEATS fuse, in the underhood fuse block, through CKT 1840 (ORN). With the heated seat switch on, battery voltage is sent from the module through CKT 1462 (LT BLU) to the Seat Cushion Element. Output is sent through CKT 1985 (PPL) to the Seat Back Element. Since the elements are connected in series, ground for both elements is provided through CKT 150 (BLK) to ground G202. The temperature sensors for the seats are located with the seat cushion element. The sensor monitors seat temperature and a varying resistance that is monitored at the Signal Enable, cavity E of the Heated Seat Module. The Heated Seat Module compares this signal to the HI/LO input to determine when to apply and shut off battery voltage to the heating elements. Temperature settings are maintained around:

37.5°C (98.5°F) for the LOW position.
42.5°C (107.5°F) for the HIGH position.
Both the Driver's and Passenger's, heated seats operate the same. However, the Passenger's seat needs seat belt buckled. When the seat belt is not buckled, the enable signal through CKT 182 (YEL) is grounded at the heated seat module and the system will not operate.

...........................

Well that explains the yellow wire.

I am a little retarded when it comes to this. Explain in english of what I have to do to make mine heat. "ex: hook yellow to power wire stupid!" Anything much more than that and I am lost.

[GMCYukalade]

Erm, that says you need the Module to make them work.. - and that the Heated Seat Control Module doo-hikey thing controls the voltage going to the Heating elements in the seat so they don't Over heat.. or Under heat.. kinda like having an Oven eye under your but.. and if it has un-limited power.. than it may just as well be that.. - or it may just burn the elements out.. and be useless..

[Nickleahy23]

Mine work fine without anything. Just wired up like the stock power seats. power/ground. The heated seat works perfect on the pass side, but doesnt work at all on the drivers side. i dont know if this is because it was broke before I got the seats or of thats where the module comes into play..not sure

[GMCYukalade]

It is very very common for the OBS Heated Drivers seat to be bad.. - mine has gone out in my 99 as well

[yellowfiero88]

Originally Posted by GMCYukalade

Erm, that says you need the Module to make them work.. - and that the Heated Seat Control Module doo-hikey thing controls the voltage going to the Heating elements in the seat so they don't Over heat.. or Under heat.. kinda like having an Oven eye under your but.. and if it has un-limited power.. than it may just as well be that.. - or it may just burn the elements out.. and be useless..

Ok I understand "doo-hickey" and "thing-em-ma-bobber"

I guess I need to make a trip to the junk yard and get a module and wire it up for safty.