62 Valiant 200 / 170 cuin /6 - Odd smell - then dead battery

He jumpered the VR with the wires still attached to the VR and the engine stalled.
I suggested he repeat that with the wires removed from the VR terminals.
If the battery is low, and the idle is low, it is possible for the full load of the alternator to stall the engine, with nothing being wrong. If I full field the alternator on my car, with a low battery, the rpm will drop by about 200 rpm. But it is also possible he shorted the ign circuit when hooking up the jumpers.