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Old 12-28-2015, 10:46 AM   #1
WeAreThe416
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2015 WRX Sport
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Default Mystery wires from 2015 STI Seat Heater Switch

I am swapping my armrest console on my 2015 WRX with a console from a wrecked 2015 STI.

The WRX console has two separate switches and plugs, one left and one right. The STI has a single plug for a combined switch that has left and right controls.

The issue I have is that I have reviewed from the 2015 service manual the wiring diagrams from both cars and I can not identify two wires in the STI harness/plug. These wires are a violet and black wire which have distinctive two silver dots on each wire. These wires do not exist on the WRX and the wiring diagram from the STI seat heater diagram also do not show these wires.

Anyone have any ideas? Here's pic of the STI plug and the STI wiring diagram which do not identify these wires.



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Old 12-28-2015, 12:49 PM   #2
Mulder
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Do you have the Canadian version of the service manual or the USDM? The additional wiring may be for Canadian vehicles only and therefore doesn't show up in the US manual.
The extra wires are on pins 5 & 6 of the plug which according to the USDM manual are non-existent on the switch.
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Old 12-28-2015, 01:50 PM   #3
WeAreThe416
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I was looking at the US one thinking they would be the same. I will try to hunt down the Canadian version. Anyone know where I can find that online?
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Old 12-28-2015, 02:07 PM   #4
Zeeper
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Ejection seat wiring?
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Old 06-24-2017, 12:59 PM   #5
braxwrx
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sorry to revive a old thread, but did you ever figure this out?
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Old 06-24-2017, 06:29 PM   #6
ActionJack-san
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Quote:
Originally Posted by Zeeper View Post
Ejection seat wiring?
That's only if you select the optional Mother-in-Law Removal package at the dealer.
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Old 06-25-2017, 11:48 PM   #7
braxwrx
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here are the two wires you were looking and for anyone else who stumbles to this thread.

https://forums.nasioc.com/forums/sho....php?t=2664203

From the thread:
"the only pins on the 12+ switch that will not be used with the factory heated seat switches are pins 5 (black with white stripe) and 6 (violet). These pins are utilized to illuminate the red backlighting on the switch. a separate power and ground must be run from these two pins, to a separate power and ground. i chose to use the red LED mood light underneath the HVAC controller, which illuminates the lower cubby. Tapping in here, will allow the switch lighting to turn on with the rest of the cars interior lights as well as dim."
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