I am trying to help a friend who has a '95 Ranger Sport 77 boat with an electrical short in the #9 fuse (Electronics) - green wire. The tricky thing seems to be that he first detected a problem because the Nav/Stern lights did not work which is fuse #1. Before finding the wiring diagram, I removed stern and NAV lights and checked for a short in the wires at both the stern light (2-wire) and the NAV light (3-wire) connection after removing the light insert. The stern light showed a short between the black and white wires while the NAV light did not. I then starting disconnecting connections starting at the fuse and looking for what had to be disconnected to eliminate the short. Turned out that if I unplugged the green wire at the terminal board (electronics) under the console just below the steering wheel, the short is eliminated at the stern light connection. From the wiring diagram, the green wire is the hot wire going here at the terminal board and there are several black (ground) wires. With the green wire disconnected at this terminal, a fuse can be inserted into #9 fuse holder and it did not blow -- finally!
At this point, I pooped out as I could not figure out what this terminal board is supposed to be doing, where the short is likely to be, and where the connection from this point to the short that shows up in the stern light (although I thought at one time that the switch might be defective and causing the stern light to show up as a short)? Anyone with ideas of what to check next? Somewhere there must be a connection between #9 and #1 fuses.
At this point, I pooped out as I could not figure out what this terminal board is supposed to be doing, where the short is likely to be, and where the connection from this point to the short that shows up in the stern light (although I thought at one time that the switch might be defective and causing the stern light to show up as a short)? Anyone with ideas of what to check next? Somewhere there must be a connection between #9 and #1 fuses.
