Your mileage must have sucked big time! You would have had minimum of 2 cylinders out, so you only had a GL1100 all this time, a 4 cyl.
Didn't notice with Supercharger

In fact, wires to coil were so wrong, that it's possible that it worked with all 6 cylinder, but in some weird order...
Last time, that all those wires where done again, was some Honda-dealer in Florida.