Bobby:
Do you have any power at all - does the starter turn over but not start the engine, and do the headlamps work? If yes, the problem may also be a starter motor or solenoid or wire. If no, the problem could be battery cables, a defective new battery, or a short in another circuit or electrical item. See the following thread for one example of a similar problem.
http://www.peachparts.com/shopforum/showthread.php?threadid=15199
Good luck, and let us know what works!

__________________
John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

Click to see 87 300E