Light Installation

Javelin Installation

  1. Choose a location on the transom 6 to 12 inches beneath the waterline. The mounting surfaces should be flat, clean, dry, and free of existing hardware or holes. Check inside the hull for wiring or obstructions.
  2. Before mounting, ensure that the light will not interfere with the operation of engines, trim tabs, rudders, etc. Clean the gelcoat or remove any bottom paint from the gelcoat surface. Mark the light center and drill the appropriate hole (0.5"). 
  3. Spread a generous bead of sealant (3M4200 or equivalent) around the inside surface of the light bezel, the screw holes, and the wire stem up to the exposed wire.
  4. Feed the light housing through the hole and orientate using the logo on the reflector. Fasten in place with tape.
  5. On the inside of the hull, apply a generous bead of sealant (M4200 or equivalent) into the wire through-hull hole.
  6. On the exterior, tighten the screws hand-tight with a screwdriver (do not use power tools as you may snap the bronze screws).
  7. You should see sealant expelled from around the light housing to ensure adequate bond. Wipe off any access sealant.

3-Wire to Poco Wiring 

Wiring recommendations: Use ABYC standards to calculate wire size based on the length of the run. If installed as a 3-Wire configuration, the orange wire carries less than 1A of power, and typically, an 18AWG wire can be used. The orange wire of the Typhoon light is the internal relay of the light and is also the wire that sends commands from Poco.

TIP: To minimize electrical noise and interference, running the positive (red) power and ground (black) return together for as much of the wire run as possible, ideally inside a jacketed cable, is recommended. Avoid loops and coils of the wiring.

  • Ensure that the circuit you are connecting to has no power. You should turn off your house battery and test to ensure the circuit is not energized by using a multimeter before continuing.
  • Run a marine grade 3 conductor wire from the light to your switch and power source. The red wire will connect to constant power after the house power kill switch, the black to common ground, and the orange wire to the normally open side of a switch. You should install a 7.5A fuse on the red wire on a 12vDC system (3A @ 24vDC).  View wire gauge reference chart HERE.
  • Connect the wires from the light to the new wire run and follow ABYC standards. Ensure that the wires are crimped correctly, and use a heat gun on the heat shrink of the butt splice connectors. 
  • Turn on house power and test the new underwater light.

Light Setup in Poco

Add Your Typhoon Light to Poco

You will need to configure Poco to add the Javelin to the light group, switch, and layout pages of Poco.

Start by connecting to Poco and going to the Configuration setup (Gear wheel in the top right of the screen). The passcode is “0000”


  • Under Light Groups, add a new light Group called LG Underwater.
  • Select the Poco channel output to which you connected the Javelin Orange wire.
  • Select Clan 4 for the Underwater Lights.
  • Select Spectrum RGBW as the Output.
  • Save the Light Group


  • Go to the Switches Menu.
  • Add a Switch.
  • Switch name is what will appear on the App and or MFD.
  • Leave Widget type as Omnillume.
  • Click on the box below Target and select the LG Underwater you created in the previous step.
  • The default intensity is set to 100%. If you would like to change this, click on the 100% and select a value between 10% and 100%.
  • Click Save


  • Go to the Layouts Menu.
  • Click the Add Switch to the layout by clicking on the Plus (+) sign in the dotted circle and select the Switch you just created.
  • Select the Home button icon (house) on the top right of the screen to return to the home screen.
  • You will now see the button you created

If you press and hold the Switch, you will see the Omnillume screen. From here, you can turn the light on and off, change color or increase or decrease the light brightness.