i have a 90 si wiring in the vtec using a pr3 so when u wire in the vtec do u splice in? or do u cut the wire a at the ecu plug ?and add a wire and run it to the solenoid or pressure switch or knock sensor i spliced in and im gettin a knock sensor code i was wondering if it had anything to do cause i spliced in any help is appreciated

 

someonee!

 

b5 is for the alternator on my 90 si on the pr3 it's for the oil pressure switch can this be causing my alternator not too charge?