What wasn't normal was a 320mA current draw with *all* fuses removed. That tells me that something unfused is sucking my battery dry. Off the top of my head, that leaves me with a possible internal short in the battery (only a few months old, but Autozone Duralast brand and severely abused with a recent bout of poor charging from a bum alternator), starter (8 months old), or alternator
I vote alternator as I don't know how you would be measuring 320mA for an _internal_ battery short (a common failure mode), so my best guess is a bad diode in the alternator. This is a nice double whammy as it also prevents the alternator from charging properly. Glow plug relay is also separately fused. Alternator and GP relay are both easy to unplug, leaving only the starter as a final suspect.
You might also check for auxiliary fuses, you could have missed some. Various MB's can have a basket-load of them, particularly the ones in the 70's. -- Jim
