Well I can tell you the ECU is not run off that circuit. Truck runs fine regardless of that fuse being popped.
Oh by the way I believe the engine stuttering issue is finally resolved once and for all. After fixing that wire, it would behave 90% of the time, acting up occasionally until one day it died and just wouldn't start. Long story, and a trip to the mechanic later, it was the ignition coil! That got replaced and the engine has run smoothly ever since.
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