2010 gxl camera wiring

Hi have a 2010 gxl 200 series with factory reverse camera . Now I've replaced head unit for a double din alpine DVD unit ,which by using all adapter looms was able to still use steering wheel button but I want to still use the factory reverse camera , has any one got a wire diagram for it or has done this before , this power has to be reduced to 6 volt also
Thank you for any help

Hi @Toymotor2010 how did you go with this? I am in the same predicament with a 2011 altitude. Cheers Greg