car won't crank or read codes after repair of harmonic balancer. on 2006 Ford Explorer

also changed crankshaft position sensor and belt,now engine won't crank,battery very low tried to jump.

Asked by for the 2006 Ford Explorer
1 answer
WAS IT RUNNING OK BEFOR? DID BALANCER CUT HARNESS TO CRANK SENSOR DUE TO SEPARATION AND CAUSE ENGINE TO STALL?
REPAIR= REPLACE? BATTERY NEED TO BE REPLACED? WE NEED MORE DETAILS!