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Re-wiring Seat Modules - Can you use the heated seat wiring for relay?

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Old Dec 16, 2008 | 08:28 AM
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2002 C320
Re-wiring Seat Modules - Can you use the heated seat wiring for relay?

I looked under the seat and there are plenty of wires under there, presumably one set is the heated seat module. Can I use that wiring instead of the cigarette lighter to power the seat module? Which module is the heated seat? Any help much appreciated.
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Old Dec 16, 2008 | 12:13 PM
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W124, W203, W204, W251
wanna know too!
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Old Dec 20, 2008 | 10:09 AM
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Old Dec 20, 2008 | 03:29 PM
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Ask TemjinX2 - PM if necessary.
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Old Dec 20, 2008 | 05:33 PM
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on my wiring mod, i just used the cig lighter as the trigger originally. Then later i just used a aux 12v source hooked up to a switch to close the circuit. So the seat control module will only work when i turn on the switch.

The module continued to be powered by the original oem source. I tried using a direct 12V source but it wouldn't work.

Only when i used power from the original wires, it work. Just click on my sig to look at the seat module mod.
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Old Dec 20, 2008 | 11:01 PM
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Originally Posted by TemjinX2
on my wiring mod, i just used the cig lighter as the trigger originally. Then later i just used a aux 12v source hooked up to a switch to close the circuit. So the seat control module will only work when i turn on the switch.

The module continued to be powered by the original oem source. I tried using a direct 12V source but it wouldn't work.

Only when i used power from the original wires, it work. Just click on my sig to look at the seat module mod.
Thanks,
How do you access the cig lighter wiring? Did you take apart the console?
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Old Dec 21, 2008 | 04:34 AM
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Originally Posted by JLD2k3
Thanks,
How do you access the cig lighter wiring? Did you take apart the console?
i added some additional instructions and pictures from other threads to give you a better idea to access the wires.

Just check my seat module thread
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