[Michael C Henry]

A circuit is a complete circle.Any point in that circle can be a problem.A bad cable end may show continuety but won't pass the kind of current needed for starting. Also a bad connection may let the starter start the car for a while.but it may not effectively recharge the battery.It will let the current out but you can't get it to take on a charge or as much as possible. Things happen batteries go bad .Starters go bad. cable ends come loose and corroed. If you remember a few months a member had a sudden problem with his starting system turned out to be the cable end came loose from the cable its self most commercially manufactured cables have crimped ends. I like soldered ends crimped and soldered and sealed are the best.
Even a bad connection at the battery terminals can cause problems. I've even seen wire that looked OK, no contniuety. It turns out the wire had been but soldered at point of manufactuer before the colored insulation was applied. this was on a floor buffer power cord.It was one conduter wire inside a three wire cover. I seperated the conducters from the larger sheath and probed the bad wire with a pointed tester when I found the bad area I stripped it down to the bare wire and found the break at the soldered joint.The soldered area was only about 3/16" wide but it caused a less flexable point in the wire.It wasn't apparent from the outside but the cord didn't work.I never would have thought that they would do that in the manufacturing process .