Hey guys. I'm trying to retro fit an aftermarket navi on my car. I was wondering if anyone would know the part # to the radio plug (R2). This is not the main plug where it powers the radio. I believe it is the accessory, or if there is a cd changer. To give an idea, if viewing the radio from the back it is the one on the left side, the smaller one. If someone can help that will be great.