Need wiring help 89 s-10

Ok heres the deal I get a 89 S-10 it once had a 4banger in it, and i bought a parts truck that i thought had a 4.3 in it but it was a 2.8.

Ok my mine question what wiring do i need to change over from the 2.8 parts truck to the 89 4 banger truck. any help is welcome. thank you.