I used 14 guage wire. If you have a metal filler that has to be bonded, I would use the same wire from the filler screw to the tab on the tank. I have a Perko plastic filler/vent cap combo, so did not bond the tank to the filler, just the tank to the negative bus in the rear of the boat. Use the diagram below, which if for a plastic tank, but it shows all the appropriate connections. With an aluminum tank like we have, the bonding wire from the filler goes to the tab welded to the tank, not the sender screw.
|