Depth Sounder Rocker Switch

[Robbiemac]

The dash on my 1998 Searay Sundancer 290 has a rocker switch labeled Depth Sounder. I can't figure out what it does. I use my Garmin GPS to inform me of the water's depth but would like to know what that dash switch is for.

[wingless · Accepted solution]

According to the linked 2001 Owners Manual (closest available to the 1998 290SDA), on page 17 of 42 the switch goes to a three wire pigtail. The three wires are dimmable dash illumination, switched power and ground.

Look under the dash for a group of three dangling unterminated wires, colored blue, red/violet and black. These wires originate at the accessory switch panel.