Garmin Threaded Power/Data Cable f/ ECHOMAP Ultra - 4 Pin [010-12938-00] Hunting & Fishing | Filet Tables With the SI-TEX SP-80 Autopilot

With the SI-TEX SP-80 Autopilot you're right on course

They also won't bleed down and require no messy fluids or hoses

As another option

Safe for fresh and cured paints

Garmin Threaded Power/Data Cable f/ ECHOMAP Ultra - 4 Pin [010-12938-00] Hunting & Fishing | Filet Tables With the SI-TEX SP-80 AutopilotThreaded Power Data Cable f ECHOMAP Ultra 4 Pin Power your compatible ECHOMAP Ultra chartplotter sounder combo with this 6 foot (2 meters) power data cable. Includes NMEA 0183 input output. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.