97 dodge neon cranks but doesnt start

I was working on an oil leak comming from the oil pressure sending unit all i did was tightin the oil pressure sending unit. it has fuel no spark all fueses are good so i disconnected the coil pack and i am not getting power. so i checked to see if im getting power to the cam position sensor and their is no power to the cam sensor. what am i forgeting to check? what would stop power getting to the cam sensor? if you could just post a wiring diagram for me that would be awesome.thanks