How to Install Gauges for a Twin Engine Boat

Twin engine boats are large water craft that generally have two engines. While twin engines may mean double the fun, they can also mean double the work, especially when it comes to gauges. The main gauge on a boat is the fuel gauge, which tells you how much gas you have before you have to fuel up again. Since twin engine boats do not commonly share a single gas tank, two fuel gauges have to be installed so fuel levels can be monitored for both gas tanks.

Things You'll Need

  • Screwdriver
  • Wire strippers
  • Soldering iron
  • Replacement gauges
Show More

Instructions

    • 1

      Use a screwdriver to remove the old gauges from their mounting areas.

    • 2

      Use wire strippers to clip the old wires at their bases. There will be three wires running from each gauge - one wire running from the ignition to the positive terminal on the fuel gauge; one negative (or ground wire) and a single wire running from the fuel sending unit to the gauge.

    • 3

      Grasp the first fuel gauge and attach the ignition wire to its positive terminal, attach the fuel-sending gauge wire to the third post on the gauge. Attach the ground wire to the negative terminal. Repeat the same process to mount the wires on the second fuel gauge.

    • 4

      Heat the soldering iron and solder all the terminal connections on both gauges.

    • 5

      Slip both gauges into their slots on the mounting surface and tighten them down with a screwdriver.