i have a 1.6 sohc vtec engine and i just put it in a 93 honda civic. i have the ecu for but i dont know how to wire in the vtec if anybody knows how to do it please let me know. and if there is a different way to wire in the vtec that would be fine too. and also the engine light stays on. thankyou.

So you want some Vi-TEChK yO?

If you are running a p28/p30, this applies to you. It may work on other OBD1 ECU/engine setups as well, but i'm not promising anything. Directly from the solenoid you will need to run the green/white wire to pin A4 on the ECU, which is the VTEC Spool Solenoid Valve Control. Next, connect the orange/blue wire to pin D6, which is the VTEC oil pressure switch input. Finally, the black wire from the VTEC pressure switch must be grounded. If you are running a USDM p30, make sure you wire up your knock sensor to pin location D3, otherwise VTEC will not engage.