Depth Gauge location on R29S 2022?

[Islander220]

My depth gauge is not working after re-launching from winter storage. Can someone tell me where the depth gauge is located so I can check the wiring?
Also, I understand that I may have to add some RV antifreeze if it has leaked?
Any advice is welcome.

 

[gswearin]

On my 2021 it was just to starboard of the shower sump. Likely issue is the antifreeze,

 

[Islander220]

Yes that is where it is located and it did need antifreeze added. The hardest part was getting the 8 tiny screws out to remove the cap.
4 screws had to be done by feel only since they were not visible. Anyway, the depth sounder is working again!
Thanks.