It's VTEC time! The most simple VTEC controller would be a toggle switch wired to the solenoid. But that would be rather inefficient. But if you're in a hurry, it'll let you test that the VTEC is working. You can design your own VTEC controller with a MSD rpm switch PN-8950 and PN-8671 which will give you a range of 4600-6800rpm to activate the VTEC.

Another low cost option would be the Autogage (by Autometer) ATM-2302 Tach with built in shift light. The shift light could be wired to trigger the VTEC solenoid, its infinitely adjustable from 1K-8K RPM and costs less than $80. See Matt's VTEC controller article at the Integra Performance Page for more info.

directly copied off this page http://hybrid2.honda-perf.org/tech/sohcvtec.html

i would suggest either getting the correct controller or doing the autolight suggestion instead of a toggle switch good luck