I found this :

H-2 : DC2（Type R） B18C (95.10〜01.6) , part no :15950902

H-3 : DC2 (*2) B18C (93.5〜01.6) , part no :15950903


(*2) ＝ For M/T vehicles ONLY (excluding Type-R)

so , I believe the harness for me is H-2 .

and u said u use H-3 ( mayb ur B18C is not type R engine )

so , everything is make sense.