1. Disconnect all (AC& DC)Disconnect positive cables from all batteries and AC.shore 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.surface where the panel is to be mounted. 3. Positive and Lamp negative feed wire. the DC. source(the batteries) to the screw terminal from the LED. Then the LED negative wire (black) to a DC negative bus bar. 4. the LED positive wire and devices. the LED positive wire (red) to screw terminal near the LED. the device or distribution panels to the screw terminal. 5. Mount the switch panel.Clean the surface where the panel is to be mounted carefully. Place the panel and screw the panel to the mounting surface as as possible with -tapping screws.6. Reconnect and Test.Reconnect all the AC& DC powers to supply to the panel. Turn 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: 1* Ignition Switch Panel 2* key Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.