I am asking this for a friend . . .

I got the axles and I got my engine out, but the b18c has an extra wiring harness that is not on my del sol...I was told that all the wiring should be there and that the harnesses should just plug in. it has three wires on it, blue with red stripe, white with red stripe and a red wire. do you know anything about this?

-any help would be great. thanx in advance.