iam using my old h23 harness i was told i need to run about 3 vtec wires correct? Does anyone have a how to on wireing the prelude for vtec im kinda new to the honda motor scene im more a oldschool chevy guy big and easy. If i had a diagram or some tips or pictures it would help me out alot. I would also like to know what type of wire i should buy and how i should wire it to the ecu , will my si harness plug right into the p13 ecu? Thanks for helping.

 

here you go https://honda-tech.com/zerothread?id=833163
and by the way you should search there are about 300 threads regarding this