alternator output problems. check all the inputs to the alt. one should be B+ all the time and the other two should be B+ with key on. if all inputs are good and alt is charging at output terminal but not getting to battery look very closely at 80 amp fusible link in fuse box and if that one is good remove fuse box and take the back off of it and inspect the lugs where the 80 is bolted in. if no problem exist at any of those places let me know. remember the large fusible link is bolted in and can not be removed without removing the back of the fuse panel.