My department has two Ram 1500's, a 2013 that's going out of service and a 2015. The 5" radio in the 2015 is acting up so we swapped the 2013 5" radio into it and it works fine. We wanted to install the problem radio in the truck that's out of service but it will not power up at all in the older 2013 Ram. Powering up wasnt the problem with this radio in the newer 2015 truck. Is there a code that must be entered for this to power up in the different older truck?