Join Date: May 2011
Vehicle: '06 SLK 280
Other Toys: Taylor 814ce
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If I get your question, you are asking if the H-K wiring harness was installed into your car even though the H-K system wasn't because of your A20 HU.
The uninformed answer is I doubt it, but if you want you can register (free) for the EPC tool, put in your VIN#, and it will tell you what wiring harness(s) are present in your car.
There's a thread on here that shows you how to register.
Current Mods & Accessories: SmartTop module, AMG Style Spoiler, Clear Side Markers with Chromed Amber Bulbs(SLKStore), John's 3rd Brake Light Flasher, R170 Homelink Module, Chromed Amber Turn Signal Bulbs front & back, Error Free LED Parking Lights (SLKStore) & License Plate Housings, Lamin-X Fog Lamp protectors, OEM Windstop, Facelift A20 w/Bluetooth & Aux-in, Drilled & Slotted Rotors, Digital Climate Control
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