I bought a 94 blazer body vin w. have a 91 s10 pickup wrecked but runs good. 4.3 vin z. Put engine and trans in blazer and used engine wiring harness , steering column, ecm , and fuel pump all from the pickup vin z. Got dash wiring harness out of a1992 s10 blazer vin z from junk yard. No injector spray. Is the 92 dash harness the problem or are they the same 91 - 92? What can I do to get this thing running?