I was looking at buying a humminbird from there closeout section online. It says with most of them that they are head unit only. What other things would i have to buy to get it running? Im just looking at a 385ci combo so no down imaging or side imaging.

When you start buying idividual parts, power cable, transducers, mounting braket etc, they can get very expensive.  Usually, the only way to come out ahead just buying the head unit is when upgrading one that all the stuff with your old unit will work with the new one.

That model has an internal GPS antenna and a color display

Stuff you would need

 

Mount base MS M

 

Power cord PC-10

 

Transducer XNT 9 20 T transducer for transom mount

or transducer XP 9 20 T for shoot-thru

or transducer XTM 9 20 T for trolling motor mount

i bought the 385ci DI in December for $258.  all the steals happen in the winter/early spring. maybe buy $99 unit now and get a beauty then?