The ground went (and was present on the last coil before it broke) from the 10mm terminal on the coil to the chasis where it met the ground to the block. Previously, the 10mm terminal of the coil was grounded to the block and then it broke off and subsequently I was running w/out the connection to the block. The parts department at my local dealership confirmed that there is supposed to be a ground from the block to the 10mm terminal on the coil (or at least they saw that in the diagram, but they could be wrong as well I guess).

As soon as this happened, I removed what I had done and now I just have this one fried/melted wire, which is red/yellowish in color which is really scary to me.

On a side note, where would I find information regarding replacing the entire wire I screwed up or perhaps the entire harness that was involved? I looked under DIY in the engine electrical and couldn't find anything.

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87 300E
202k on the clock