Tries to start but wont turn over. on 1997 Mercury Mountaineer

I replaced some dashboard lights and rear brakes and now the car wont start. The starter turns but the engine wont turn over.

by in Leander, TX on December 24, 2009
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1 answer
ANSWER by , December 24, 2009
Try jump starting the battery, maybe the key was left on while making the repairs and it is too weak to start the engine?