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i hooked up an LED light to find out when vtech kicks in...i tapped into the green wire with the yellow stripe...and i grounded the other wire...it says it has a built in resistor...and yes i do have an EX! please help!!!

 
Rep Power: 352

first off... its "Vtec"

andd stands for "Variable Valve Timing and Lift Electronic Control"

and second, that wire could hav a constant power but not an engaging vtec signal....its different, you cant just tap into it like that...

 
Rep Power: 279

If you search you will find a thread that has to do with this..

 
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Why do you need to know when Vtec kicks in? I don't get why ppl want to know since it really doesn't do much on 7th gens, but mine doesn't even have it

 
Rep Power: 266

seriously it's not worth it, vtec engages at a pretty low rpm for d17s around 2.5-3k or something like that, so basically the light will almost be constantly on, it'll only annoy you, and you'll end up taking it out and have to deal with a hole in your dash....imo it's only worth it for type-r's, s2000's, etc.. but then again, you don't need a light to tell you when vtec kicks in for those cars

 
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i kno i spelled it wrong...i was bored so i wanted to try this...does anyone kno wuts going on? should have i bought the resistor seperate from the led?

 
Rep Power: 811

dont do that it messes up stuff

 
Rep Power: 352

+1

man.....if u wanna know when vtec kicks in, get a V2....or some sort of intake...

you can hear when vtec kicks in because the tone of ur engine gets alot deeper..

 
Rep Power: 279

I say do it, then dont come crying to us when stuff messes up! A simple search would have net'ed you an answer that you would have liked.. but nooo.

 
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And don't hope for VTEC to kick in when you are at Neautral (M)/Parking (A)