Yes, or at least I think so. When I attempted to diagnose the cables I used the jumper cables to supplement the already existing battery cables. In other words, I ran the positive jumper cable from the battery to the hot bolt on the starter and I helped the ground cable by going from the battery ground to another grounded part of the engine. Don't know if that's kosher but it seemed to make sense to me at the time. Maybe I should just change the damn cables and stop pussyfooting around here. Is this getting to me yet. NAH!!!