[Plump Kibbles]

Continuity check off the negative lead from battery side to the engine? There should be a ground lead off the negative terminal with a ring connector that the terminal screw goes through.. maybe? Also +1 JerryHawk for fuses - I can't think of anything other than maybe the ground wire itself loose from the terminal side. Could have come loose from the crimp as well? Did you disconnect any of the wiring? I wouldn't say idle, but you did put a pod filter on - which when I did, I had to raise my idle; but I don't think that's the issue... Last thought - maybe look at the voltage regulator plug? Just tossin out ideas..