i need to know how to wire them up in a 90 ls with stock obd0 wiring harness and pr3 computer. thanks

 

u need to wire-

-B19 =knock sensor(white wire/sensor is on back of block under intake manifold)
-B5 =Vtec pressure valve(blue/black wire on pressure sensor)
-A8 =Vtec sel.(Green wire on selonoid)
-Vtec pressure ground--ground it to the ground at the thermostat housing.

here are all the OBD0 pins for PR3

http://www.hondata.com/techwiringpw0.html