New to the forum. I've read it for a long time - great information and very helpful. I have a problem which I couldn't find anything in posts or archives. I have twin 1999 Yamaha OX66 Saltwater Series II motors with digital gauges. Both Starboard and Port Gauges operate fine. However, Port gauge is very, very dim. Previous owner put a new gauge in and problem remains. My questions are: 1. Is there a sender unit (or something similar that provides the power or ??? to the gauges? 2. Does anyone know of a resource online where I could find the wiring diagrams of the gauges? I have the Sevloc Manual and it doesn't address this issue. Any help is appreciated and thank you very much in advance. Mark