help!!

[ivancou]

If it runs after being jumped its running off the battery , further proof is when you disconnect the battery. But without a jump it wont start .
Battery cables .
I had a jeep ,lights/radio worked,no start . Internal corrosian inside the ends of the cable .New cables , end of problem . Not only will they not supply enough power to start the vehicle but it also blocks the power feeding back to the battery . Possible that there is still something amiss in the charging circuit too .Dont assume that just because its new , its ok .
I have a brand new regulator for my C 10 that wont put out enough to charge the battery , had to use the old one and adjust the tension on the one coil inside to get the old one to drop down to 13.8 instead of 17 . The new one has a one year warrenty so now I have to return it . Ivan