Hi Tissue, welcome! I'm a fellow newbie to this forum as well
Yes, when I removed my stock stereo, I had to also remove the HVAC Control panel (only 3 or 4 connections). Under that unit, you'll find the connection to the Aux and USB. The USBHY1 for Hyundai/Kia connects directly to the stock Aux and USB on the dash. Since the USBHY1 has RCA, you may need a RCA to 1/8" cable adapter if your after market stereo only has an 1/8" plug.
I too am looking to pick up the ASWC-1, but the prices I was being quoted here in Canada were around $100. Too much for a few buttons of convenience. But I may try to find one when I'm back in the states, for less.
Thanks for the link! I see they ship to Canada and the price is very reasonable. Much appreciated!
David
Did you retain the illumination for the AUX/USB controls? Looking at Alex2013GT diagram http://www.elantraclub.com/forum/uploads/monthly_11_2012/post-34-1352042132.gif
which wire would i need to pull out and slot into the USBHY1 socket? Or possibly compare the stock AUX/USB socket to the USBHY1? It would be ashame if I was not able to retain the illumination.