Thinking my Alternator was lazy I tried every thing to keep my battery charged.What did work was running another cable along side the earth cable from the Alternator to the body and a cable also from the positive battery terminal to the Alternator .Now my charge indicator is around the vertical position instead of discharge .Maybe the cables have gained resistance over the years .740 TURBO 1990 UPDATE 198 000 klms many country klms so its hardly run in .