B&B Molders 94221 City Water Dish W/ Plastic Check Valve, Black EPATACH3 or 3) plug in any

or 3) plug in any of the four available GPS handheld cables that allow GPS track plotting data to be transferred from any handheld GPS that has NMEA output capability to the fish finder and displayed on the fishfinder screen

Made for the most severe marine environments

especially if there's bad weather

The return current is automatically blocked even when the secondary battery has a higher voltage

B&B Molders 94221 City Water Dish W/ Plastic Check Valve, Black EPATACH3 or 3) plug in anyPlastic check valve. Direct OEM replacement is made of high quality plastic. Factory tested for zero leakage. Made in USA. Direct OEM replacement Guaranteed not to fade Check Valve with 1 2" Male Pipe Thread Includes installation kit Impact & Road Salt Resistant Cut Out Dimension 3 1 2" diameter Outside Dimension 4 3 4" diameter Dish Depth: 3 4" Valve Depth: 3" IAPMO, NSF & CSA Certified