It’s very easy. Just need something to mount it to, a 12v wire and source and a transducer.
Garmin sells the ice kit, but IMO it’s overpriced. Instead buy things separately. You can get them all at Garmin webite. They have competitive pricing and fast shipping.
-12v Lead
-Ice Ducer (GT8 or GT10) I have the GT8 and it works great, especially if you don’t fish deeper then 50ft.
-12v Battery
-Some sort of shuttle or Genz box or small cooler to mount it to.
You may also need a pin adapter between the ice ducer and head unit. Varies depending on unit and ducer.