Installed the new Duracell EGC2 6V's yesterday to replace my two 4Ds. Of course this required quite a bit more wiring. I actually had a very pleasant experience at the local West Marine store at Herrington Harbour. The gentleman took at least half an hour to help me pick out everything I needed, and he cut and crimped the cables, something I didn't have the necessary tools for. He did a meticulous job. Fortunately, I diagrammed it correctly and everything works :dance: