New GPS/bottom machine combo question

[phatdaddy]

Thanks skunk & D. I went by the local merc dealer and they were telling me i need a 500 dollar adapter, then a 250 dollar cord.

https://www.amazon.com/Ancor-Marine-...xpY2s9dHJ1ZQ==

Would this work? I think all i need is one input and two output

Edit. Did a little more reasearch, looks like i need a gateway or something like that.

What txducer do you have thru hull or transom mount? Most of my fishing is 140 ft or less and bay stuff is less the 30 ft. Really looking forward to the side scan and down vu.