I just hope nothing else breaks. Don't underestimate my ability to screw things up. I've had years of practice.
I'm not 100% certain that we were the cause of the failed MSD box. The fact that it went bad after we'd charged the battery seems to point towards us causing it. I've been in the habit of charging the batteries on the 'Cuda, Duster, and dually whenever they needed it and never disconnected their MSD boxes. This was our first box failure. I guess I'll be disconnecting things on all the cars from now on.
I contacted MSD about repair work on our box and found that the warranty was only good for 1 year. They said it would cost a minimum of $28 and a maximum of $88 for the repairs. That excludes shipping costs. If it does turn out that the box is beyond repair they'll still charge us the $28 minimum fee. Considering that JEGS wants around $360 for a new one, we'll be sending this one back in.