Adrinal
4k gallons and growing!
I asume you mean the cord that is between the spray bar and the heater in the first picture. That cord runs to the dial for the heater (its a thermometer), which hangs on the wall. I highly recomend the titanium type heaters and will never go back to glass!!!! shock zap shock... my hand still hurts thinking about all the times I have been shocked by a broken heater (course they do make them better now) and there is that one time I burned the carpet when I forgot to unplug the glass heater... dont think the titanium could do that.