Heated seats connection

[lewisbryant]

The switches must have a power supply to them if you see the wiring diagram in Colin's post you will see you just need to go from the switches to the seat connector.

How many wires are at the seat switch?
Should be 5 wires.

Terminal 2 and 4 are the wires that should run to your heated seat. 2 switch should go to 3 heater and 4 switch should go to 1 heater

And then the last terminal on the heater connector should run to a good ground.

You may find that that M13 connector has the wiring running to it. M stands for main loom and B stands for body loom.

The M loom is obviously used in both versions with or without heated seats as the plugs are already there. But the body loom which should have the seat heater connectors dont have the connectors so you may find the wiring runs from the switch connector to M13 and then doesnt go any further as the body loom doesnt go any further.

I would splice in right at the switch if it was me
There should be a brown and a green wire at the switch connector ?

[moshchops]

Here is a picture of the under side of the switch panel and the plug connection that goes under the seat, not sure were to connect it.

[lewisbryant]

The grey and brown wires are for the heated seats, the seat connector you have there is just a 1 pin connector? The heated seat pad requires a power and ground to work can you post a pic of the seat connectors under the seat

[calnorth]

The J10 electrical harness diags are as attached ...see page PG - 98 for relevant RHD internal/cabin vehicle connectors. Page PG - 88 is the start of RHD harness diags. I think the M (M13) harness part is in the engine bay? Wiring needs to be either extended from there or from the switches as Lewis mentions.

I note a wiring count difference on the switch pic above...6 wires per switch whereas circuit diag below shows 5...just warns that the documents are not 100% correct. Looks like 3 wires per seat heater (2 * switched power & 1 * ground)...

Circuit pic:

[moshchops]

[lewisbryant]

I would say that black connector isn't for the heated seat, im not sure what that is to be honest possibly the seat occupancy sensor pad although driver seat wont have this if this is a pic of the drivers side.

I'd say this connector in this pic is your heated seat connector
Harness wires to the heated seat connector are
Grey
Black
Grey with red stripe

[moshchops]

Both seats have the black connector, just don't know what they are, I'll just have to do a bit more research

[Sidtheslotg]

Hi I know this is an old post did you ever get them working

[Saggitarius]

Hi I know this is an old post did you ever get them working

If isn't too late I'm gonna try to retrofit a set of heated seats what I just bought. Because I have an n-tec I have the switch harness (I got the switch module for free along with the seats). I have to figure out, how can I get underneath the floor carpet. I hope the wires are there, if not then I have to find where the wires are goes from the switch.

[andy2019]

You'll see the wires on your current car under the seats. Did you get the centre console part with the heat switches built into it aswell