hello welcome to the site.
what wiring are you looking for ?
the p28 is obd 1 correct ?
ok give me some time while i load the info. you just need the pin locations.
your putting a b series motor in correct ?
sorry for not asking all this at once.
what harness are you using stock b series engine harness ?
you need knock and vtec .
ok a B series motor is a duel over head cam motor the D series is a single.
so your upgrading from a none vtec to a vtec motor. yes ?
ok you will need to run 2 wires from the vtec switch and the pressure solenoid .
the blk/blu wire will run to the pcm connector c406 and put in terminal D6 and the single pressure solenoid wire will run to c404 pin A4