need help identifying these 3500 harness connector

[hookdonspeed]

total of 5 connectors i need identified, i didnt pull the engine so im not sure what they went to, engines still in the seacrate at my work, cant really trace the wires while its there

2 here


2more


last 1

[hookdonspeed]

ok, the grey plug in pic one and the black plug in pic 2 are ECU plugs....

any idea bout the other plugs? or where the 3rd ecu plug goes to?