i just completed a D15 swap to D16z6 Vtec and i changed my harness eventhough they are almost exact just one or two extra plugs. but you can just run those wires from the vtec part of the engine to the shock tower harness here is a great page to look at. let me know if this helps.
http://www.honda-tech.com/zerothread...rint&id=554053 it tells you exactly what you need to know