I searched and couldn't find a very clear answer, so I am just going to post. When doing a b18c swap into a civic with a D series, will the engine wiring harness from the integra on the b18c work in the civic, or do you need to get the b series wiring harness from the civic?

 

You can use a sohc harness but you need to mod it, it's easier to use a sohc harness