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Message: <blockquote data-quote="hunterguy86" data-source="post: 255205" data-attributes="member: 4624">Are you doing a console or tiller steer motor?Regardless, all circuits need to be fused. I would think 16 gauge wire would be big enough to run the lights. The fuse is designed to protect the wiring as well as the device. If there is a short,  and the fuse doesn't blow, it can start a fire. You can use a fuse block or a switch panel with built in fuses. Use a bus bar for the grounds. Do not ground through the hull of the boat. Be sure to use good connectors. Solder is best but if you don't know how to do that, you can use crimp connecters. I prefer to use a crimp and seal connector (has built in heat shrink) and then cover over it with heat shrink. Good tools make all the difference. Give us some more info on the setup and we can give you some more feedback as to the install.</blockquote>