I'm helping my brother replace his defective 5" Oem receiver on his 2014 Ram. I know I have to cut the metal bar in the dash to install the double din Pioneer touchscreen. Is there anything else I should be aware of when installing this? The new unit was ordered from Crutchfield with the install kit and basic wiring package since he doesn't use his steering wheel controls. Will his Oem back up cam work with his new receiver without running any new wires? Thanks for any help you guys can provide.