1. Disconnect all power(AC& DC)Disconnect positive cables from all batteries and AC.shore power cord from the yacht.2. Cut opening for mounting location.Using the mounting dimensions provided to measure and cut out the mounting hole in the. where the panel is to be mounted. 3. Connect Positive and Lamp negative feed wire.Connect the DC.power source(the batteries) to the screw terminal away from the LED. Then connect the LED negative wire (black) to a DC negative bus bar. 4. Connect the LED positive wire and devices.Connect the LED positive wire (red) to screw terminal near the LED. Connect the device or distribution panels to the same screw terminal. 5. Mount the switch panel.Clean the where the panel is to be mounted carefully. Place the panel and screw down the panel to the mounting as tight as possible with self-tapping screws.6. Reconnect and Test.Reconnect all the AC& DC powers to supply power to the panel. Turn on and off all branch circuits to check if the panel works normally. Switch Ratings: DC 12V Panel Rating: 10 A Product Dimensions: (W x H) 69 x 69mm Colour: Black Material: nylon + metal Package Contents: 2 x Ignition Switch Panel 4 x key Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.