Mikuni SBN's fuel inlet is bottom nipple and outlet is top nipple. What do you mean by needing a diagram? Maybe this will help if. You can take the reserve line from the tank and "T" it to feed both carbs the "T" both returns together back to the tank. I would take the assembly out of the take and run 2 equal length lines, 1 using the reserve and 1 using the regular feed line, attach Cold Fusion anti siphon or screened clunkers and feed each carb a line. I have a setup like that if you would like to buy it already done just pm me. Hope this answers what you were asking. Have fun