'95 C280 won't crank.

[atikovi]

This is a salvage car I bought a few years ago for the engine but haven't gotten around to using it yet. I wanted to park it at another spot on my property but it wouldn't even crank. I last drove it a year ago and it started fine. I unlocked the trunk and put in a good battery. Then unlocked the drivers door with the key and tried to start it. All the normal lights in the dash came on but it wouldn't crank. Any ideas why? Immobilzer? But I unlocked the car with a key. Transmission shifter interlock? But I also tried it in neutral. Starter solenoid stuck? But none of the dash lights dimmed in the start position. What else?