NEED HELP PLEASE ecm swap

[six4chevy]

I have a 87 s10 blazer that was originally a 2.8 with the 1227429 ecm. I did a 4.3 conversion but did not change my factory wiring harness. I have been told I can just repin a few of the wires and I can run the 1228062 ecm but nobody can seem to tell me what wires to repin. I have an ecm out of a junkard truck that was a factory 4.3 but the service tag is gone. the prom is atba 7594 and the bar code inside the cover reads 078081117549219. Can someone please help me out. this is the last thing I need to do and this job is complete.

[tayto]

get the wiring diagrams for both vehicles and figure it out. diagrams are on this forum if you look.

[stew86MCSS396]

Quick search of the old ECM... https://www.therangerstation.com/tech/chevy-2-8l-v6-tbi-swap-ecms-1227429-and-1228062-pinout/

[six4chevy]

Im sorry sir I did look and could not find them. Excuse me for not bieng very tech savy

[six4chevy]

I seen that and from what I can tell the only difference in the two would be pin d2 on the 1227429 it is map ground and on the 1228062 its the tps,cts ground. looking at the pinout for the 1227429 there appears to be no pin for the tps,cts ground according to that schematic.