I have an 05 Cruiser RK and the electric side of the water heater stopped working

. I don't seem to be getting power to the heater. Have 110volts at breaker. Installed new element and relay before I checked the current. Anyone know how these are wired from the breaker box. Is it straight to the heater or run another way. Undoubtly the wires are not spliced. Do the wire run through the box under the slide or the roof. I am thinking it is a problem where the wire nuts are tied to the relay wires. Any advive!!