i've looked..and searched..and got the wiring diagram and even the ecu pinouts--the problem i'm having is that A4 has already have a wiring going into it... i think it was a blue wired.

94 prelude-think came w/ stock h23....

i'm stumped...don't know what to do since there's already a wire going into A4...someone please help me out here asap....
what wires is A4 btween?? give me that head up 1st and then the rest..thanks

 

UPDATED****

okay..found out that the wires that were already in pin A4 and D6 were the original wires for vtec and pressure switch. Here's what i did, i just splice into those 2 wires and then out to the vtec solenoid and pressure switch. Plug in ECU and battery back on, start engine, Engine light comes on....not like it did before where you would have to drive it for 30 mins before engine light comes on.

some might wonder why i didn't just follow up w/ the 2 original wires, well its because i couldn't find it anywhere in the engine bay...look and look and look...got pissed couldn't find it so i wired up 2 new wires and splice right into the 2 original wires. Could that be the cause of the check engine light??? I tried looking for the diagnostic plug to check out the code---but couldn't locate it. anyone got a pic of where it is please..help me out...thanks