Finally got the Mercedes home. It's like having a new toy to play with. The security system was what was keeping the fuel pump from running. Once I figured out how to deactivate the security system the fuel pump started running and the engine started.
First step will be giving it a bath. Then I need to drain out the old gas and change the fuel filter. I got about 1/2 cup sample of gas out of the Schrader valve and it had a lot of water in it. I'm surprised it ran well enough to drive it home with that much water in the gas.