I have replaced the crankshaft sensor on my 2004 ML350 but it still won't start

What is your question?

Crankshaft position repair advice states when the sensor is replaced its electrical connector should be checked for damage or wear. I have replaced the sensor and the connector appears to be ok but it still won't start. If the connector is bad how do I know? Can it be replaced or do i have to replace the entire harness? I would love to find a manual for my vehicle but am having trouble getting one. Any advice on repair and finding a manual would be greatly appreciated.!