Alternator Trouble

[Tyler]

After installing a new belt/ tensioner pulley on my SHO it wont start. it wont turn over but attempts too. the battery light comes on when i turn the key to start it. i jumped it but it still wont start. Does the alternator need to be replaced or does the battery need to be replaced? or both?
-Tyler

 

[luigisho]

Check for codes. If you jumped it and it still won't start and the starter is working you may have a faulty sensor. New timing belt or accessory belt & tensioner?

 

[Tyler]

Check for codes. If you jumped it and it still won't start and the starter is working you may have a faulty sensor. New timing belt or accessory belt & tensioner?

after investigating further i found the sensor unplugged, it now runs like a jet and is as fast as one. thanks for the help