AMP gauge reading low
 

[ul]
Having problems with my truck. For a while I was seeing the amps drop slowly as I would drive. After turning off my truck, I would turn the key and have a hard time starting it again. My battery is only a year old, I replaced the battery cables, tested the alternator and found it to be working ok, starter and solenoid seem to be working ok. What else could it be? The other day I started it up and was reading low amps from the start?