[tm1100s]

Originally Posted by JimMoore

Check voltage from the positive terminal to several of the big bolts on the frame. It should show roughly the same battery voltage.

The problem with a test like this is that even if there is only one strand of wire in the ground or POS battery cable it'll still give you system voltage. An ohmmeter reading will do exactly the same using it's internal 3v test voltage under about .1amp. But under a load, failure occurs because the pathway lacks the ability to carry any amperage.