Complicated Altinator issues.

I'm working on a 96 Pontiac Grand Am GT. The altinator is about 4 months old, and the battery light comes on intermitantly, Even when I unplug it from the altinator. Intermitant short to ground right? Well the wire runs from the cluster to the engine computer, to the altinator. Well after checking the harness as best I could, And not finding any thing, I ran a new wire from the computer to the altinator, didn't work. The light still comes on intermitantly and the alt. still won't charge. So I figured my next step would be to run a new wire from the cluster to the computer, but the wiring diagram I got off of Mitchel On Demad 5 says that the wire is a data line, and also goes to the Data link connector. Can I just run a new wire? Or does it have to be a special wire for the data to still transmit? Also when the battery light is off and every thing should be "working normal", I'm only reading 6v at the altinator end of the wire. Is that normal? With the light off the alt. should charge right? Thanks in advance for whatever help you guys can offer.

Mike

Welcome to AF.

Check the fuseable links in the charging system.
Like you said grounds, check all those too.