I'm trying to configure some of my settings on my Helix 9 and when I get to Settings/Setup there's no option for Temp. I was trying to set up my side of screen overlays with depth, speed, time, and water temp. I have the mega si transducer and a puck ducer split by Y-cable. I was doing this in the garage. I know I'd be getting my temp readings from the mega si transducer. Does it have to be in the water for the option on the head unit to appear? Thanks.