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im doin an eng swap using a 90 grand prix (3.1 non turbo)but ran into a hitch w the harness. I cant seem to find a diagram or even what wire goes to what pin on the plug that goes through the firewall. I dont wanna tear the entire harness apart to find out. oh im using the fuse/relay box also and the plug has numbers and letters so their gotta be sump but my chiltons dont tell me.
any help greatly app
any help greatly app