I'm replacing the engine in my '87 325is with an engine out of an '89 325i. Everything seems to be identical, except on the wiring harness in the glovebox. There's a few wires that don't plug into the computer that on each wiring harness (the '87 and the '89) are different. I want to splice these wires but I don't know what they are to and which ones match up to which. Could someone with wiring diagrams possibly help???