hey ppl, i want to install a custom system into my Z, but the catch is that i want it to be stealthy. the main concern i have is that i want to keep the stock HU. im not interested in aftermarket HUs. does anyone out there kno who to wire it via stock HU. i understand that aftermarket HUs has AUDIO LEFT, AUDIO RIGHT, and a REMOTE plug, and the stock HU only has a wiring harness coming from the car into the HU, how exactly do u go about get a audio left, audio rite, and remote plug from the stock HU?