Hey guys, I'm new to the board when it comes to posting but have been a reader for a while now. I'm in the process of planning out rewiring my boat (16' Grumman deep-v) which will include a fish finder, bilge, nav lights, underwater floods on transom, and some red interior LEDs. From searching previous posts on here I think I understand the basic concepts....leads from battery to fuse box and the grounded bus board, then positive and negative leads from the devices into the fuse box and bus board with switches on the positive lead between the fuse box and device. Use amperage and length of wires run for each device to determine the wire sizes and fuses to use. I think I've got that stuff down.
Now what I can't wrap my head around is when you want to have multiple lights on one switch, in my case this would be for the nav and interior LED lights. If you have just one light/device the positive and negative leads just run straight to the fuse box and bus board. But if you have two or more lights how would that work? Does each light go on it's own circuit back to the switch, thus having multiple positive wire between the switch and lights? Or would you run the positive lead from the switch to the first light, then the second, and so forth then bring it back to the switch to close the loop? I'm worried about making sure I get the maximum brightness out of the lights by doing the wiring correctly. I'm having trouble visualizing how this would work so if anyone has a picture that would help I'd surely appreciate it! Thanks!
Now what I can't wrap my head around is when you want to have multiple lights on one switch, in my case this would be for the nav and interior LED lights. If you have just one light/device the positive and negative leads just run straight to the fuse box and bus board. But if you have two or more lights how would that work? Does each light go on it's own circuit back to the switch, thus having multiple positive wire between the switch and lights? Or would you run the positive lead from the switch to the first light, then the second, and so forth then bring it back to the switch to close the loop? I'm worried about making sure I get the maximum brightness out of the lights by doing the wiring correctly. I'm having trouble visualizing how this would work so if anyone has a picture that would help I'd surely appreciate it! Thanks!