In almost forty years of being an electrician, unless you have a clip on ammeter, I don't think I have ever seen a multimeter than can measure that kind of amperage.
If you have a set of jumper cables, connect the negative on the battery to a negative near the starter. If it works, you know you have to look at the negative side of things.
If it doesn't work, take off the negative jumper and connect the positive battery post to the positive start lead on the starter. If it works, you know you have to look at the positive feed.
