I recieved a what I thought was complete wiring harness with a CRX i purcahsed (it was outside of the car included as parts). After taking it out of hte box I realize that it doesn't have an engine harness. Meanwhile I have been talking to someone about selling it and I would take the plugs I needed for my mpfi conversion.

Now I don't have the engine harness that I need for plugs, and the buyer wants. So I might buy a 90 teg engine harness. My question is will this 90 teg harness plug into and work with the 89 si interior harness so I can include it with the buyer's purchase of what I told him was a complete harness (I am going to tell him the full situation too, not lie to him)

 

89-90/1 harnesses are different.