Dameancharles

So I have a 02 lx 1.7 with a 5 speed manual, im interested in changing my head to a vtec . Ihave read the posts and understand the ecu swap, key flash etc. But I also know you can keep your original engine harness and just add some extra wires here and there for the solenoid and other sensors, which ones will be needed for that, and where would they be needed to go and where would they need to be plugged in. any information or direction to said information would help me alot, try to dumb it down for me as well, im.not all informed in the technical lingo. Thanks