Rockwood water heater question

Old-Biscuit wrote:
Outside switch ON

SO it is a Suburban Water Heater....outside switch is for electric & inside switch is for propane
120V AC........Black wire
12V DC (propane)...Red wire

Suburban uses a simple wiring scheme for their 'standard' water heaters

120V AC
Individual Circuit Breaker feds AC Hot/Common to junction box on right side of tank looking at WH Tank from inside RV)
From Junction Box to ON/OFF switch (Black Wire)
From On/Off Switch AC Power goes to the set of T-stats (Left side Black Wire=----top t-stat is HI temp with manual Push to Reset)
From Set of T-stats AC Power goes to Element (Black Wire)

Neutral goes from element back to AC Power Panel (White Wire)

Rockwood uses Suburban heaters and always uses two switches, the one on the heater itself and another on the control panel inside marked water heater electric, usually a blue lighted annoying one beside the million candlepower annoying one that says water heater gas. Both the inside electric and the one on the heater need to be on.