I have a 2009 Razer 3612 and would like to install an ac in the front. I believe I have the ac prep as I have a breaker labeled front a/c. I pulled the interior vent cover down and did not see any wiring other than the wires to the vent fan. Where would the wiring be for the a/c prep? Do I need to remove the wood trim around the opening to find the wires? I would like to DIY and save some costs if possible.