I am doing an install on a G6. Is there a harness out there to run the amp to the factory head unit? I haven't done one on a G6 yet and it has been a while since I did an install on a factory headunit so any help would be great. I hate splicing wires if I don't have to, however will do it if needed. If you know of the harness or kit let me know so I can have the kid purchase it before I get into the job.