Rewired all the lighting on my pontoon boat this winter and everything works and it look so much better. I hooked the motor starter wiring to a separate battery so it would be on it;s own and all the accessories would have their own battery.<br />I started the boat and had no instrumentation. no tach, fuel guage, battery etc. This wiring was hooked to a different source. I had to connect them to the same source to make them work. I thought the instruments fed from the motor leads. Any ideas?