i have found the clearest directions, tht is: (but there is a part i dun understand)
Connect the Negative side of the LED to the VVT output on the ECU's 26 pin connector. This will switch to Gnd when VVT is activated, causing the LED to turn on.
on a black top ECU diagram, there is actually a code called VVT. which is not on the 26pin. can anyone tell me which exact one am i suppose to connect to? below is a ECU diagram for the blacktop 20V.

and also, someone mention to put a diode on the LED so tht it will not send signals to the ECU. is tht the small black one with a silver band at one side??
thx for any help guys