i heard 96-98 civic EX harnesses were the best ones to use when swapping a b series motor in an EK. my question is tho does it matter if it came from an auto or 5spd civic?

 

It depends on what tranny your running and go with that accordingly, If you have a manual tranny don't try to use an auto engine harness, and it is one of the best harnesses to use but a little hard to get ahold of.