That is correct. That yellow wire is an always live wire so you don't loose your presets. You could connect a wire from battery to that wire first and then turn off the battery switch just to test if it properly functions before going through the work of stringing a wire through the boat.Ok I plan on running a new wire direct from the battery (With a in line fuse) to the yellow wire of the radio. From my understanding I should no longer lose my preset channels then? Any easy way to run this wire up to the dash?
No, you are all wrong and stop worrying about wire colors. Find constant 12V, switched 12V, and ground.
Before you start check the wires connected to the battery shut off switch. I’ve seen people move them all to the switch which would cause everything to turn off. If you find the correct one it might be as easy as running that cable from the battery switch to the battery for always on power.That will be my project this weekend. Get the battery in and test the wires so I can connect the new stereo and amp. Thanks for everyone help