Total newb to installing or upgrading any electronics on my boat. I have a Tracker Targa V-19 and will be installing a Cobra MR F-45D VHF. The power wires that came with the unit are quite short. I am not sure if there is existing wiring I can splice into under the console or if there is a terminal block under there I can connect to. Or maybe I need to run dedicated extension cable from the battery up to the console just for the radio. There is no guidance in the installation instructions...I think there is a level of competence in dealing with marine electronics assumed that I don't possess. Any advice or pointers is much appreciated!