Ok, I recently got a new (to me) boat, this is the 6th boat I've owned and I've never had an issue like this....I'm hoping maybe someone else has experienced this in the past and can steer me in the right direction. So I can't get my Navigation lights to work at all......BUT, when you test the lights at the nav light sockets at both front and back spots with a test light it lights up the test light. I even put my test light down in the socket to make sure there wasn't somehow a loss in power from the wiring in the rear of the socket to inside the socket and it lights up the test light. I also took the end of the test light and tried to scrap any and all corrosion off the socket posts that might be on those to eliminate that variable. Another thing is that I still have my old boat and I took the light posts over and tested them on that boat and they worked just fine there, and I brought the lighting post over from my old boat that I knew where working and couldn't get them to work on my new boat. My battery is hot, I can start my motor, and it stays connected to an on board float charger. So anyway, I messed with it for at least 2 hours last night and got no where, could always light up the test light, but never the nav lights, not even a flicker.....??? Anyone have any suggestions? Any help will be greatly appreciated!