I have a 2002 Kia optima LX. It has power windows and door locks but was not shipped with Keyless Entry. I verified the Reciever was not Present, so i ended up buying one that was out of a 2002 on eBay for about 15 bucks. My question is where do I connect this unit? do I need to buy an additional harness? Are your connectors apart of the stereo lume? I will buy a replacement Lume if needed I'm just looking for some more information because the factory service manual is not giving me much information other than the Pinouts for the receiver itself.