2001 Chevy Blazer 4wd 4dr
Truck died while driving. ecm1 Fuse is blown. replaced fuse, as soon as ignition is turned on fuse blows instantly. disconnected everything on the circuit, replaced fuse, plugged in comonents 1 by 1 turning on ingnition and checking fuse. fuse held strong until I plugged in the connector for the fuel ingection system (7 pink wires and 2 black wires going into plug located between the throtle body and the distributer cap).
I dont know where to go from here. ingnition switch, injectors, or wire shorting between the fuse block and the injector plug, or shorting wire beyond the plug? Not sure if the truck suddenly dying while driving is a clue. not an intermittent problem.

Today I put a multimeter on the male pins that go into the fuel injector plug. not sue what knid of values i should read, but 1 set of pins is reading much different than the others. one side of the pair of pins is reading zero, and the other side has values that jump everywhere. could this be my short in the circut that's blowing the fuse? Is measuring ohm value from these pins the right way to test, or do i have to disassemble everything to test at each injector?