VTEC Indicator Light - need help!!!
04-10-2003
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VTEC Indicator Light - need help!!! 
Ok, I am a moron, I said it, had to so I dont get 
(flammed) to awefully bad by anyone else. I bought a Light to hook up into my gauge cluster and wire to the ECU so I can see when my VTEC kicked in. I have a 01 Civic EX 5-Speed just in case anyone needed this info. I need to know which wire I need to hook my positive into? 
I have no clue, and, get this, where the hell is the ECU, I am blind I swear. I think it is under the hood, obviously, but on the passenger side on the fire wall, let me know if that is it, I dont know 
!!! If anyone has any information on this, I would appreciate it. Thanks, I am going back to the 
to see if I can remember why I did this...Crackerman
04-13-2003
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04-14-2003
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Rep Power: 0 HAHAHA!!!! I got bored today and decided to try it. I have to say that it was very simple and didn't take that long at all to complete. I also was suprised at when the vtec engaged on a medium to hard throttle. I suggest anyone try this because you'll be suprised as well.
04-14-2003
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Rep Power: 0 It shouldn't....The wire from the LED that you hook up to the ECU is only transmitting the signal when the vtec engagement turns on. I could be wrong, but I don't see how it could mess anything up.
04-14-2003
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Rep Power: 0 Originally posted by cvc2k2
on our cars.. it is the WHITE HARNESS(MIDDLE) , the GREEN with YELLOW stripe wire.
on our cars.. it is the WHITE HARNESS(MIDDLE) , the GREEN with YELLOW stripe wire.
04-15-2003
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Rep Power: 0 It all depends on how you "get up on the throttle". If I stomp on the gas, it kicks in at around 2500. If you just drive normal, it's around 3200. Atleast it is for me anyways. It also stays on but if you let off vtec disengages when it hits 3500 or below until you push in the gas. It's a pretty neat mod...I thought it would be stupid at first, but I've kinda learned some things about our vtec.
04-15-2003
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So are you telling us that this is the parts list?
(Copied from the other site)
Package of 330 OHM resistors Part# 271-1113
5mm LED of your choice, I choose a Blue on Part# 276-311
Roll of 18-gauge wire, I got a three color package of solid core but stranded would be better (solid core part# 278-1223 )
Snap-in LED mount Part# 276-079
Tap-in clips Part# 64-3052
If all I gotta do is hook up one wire to the ECU lead and ground it, I'm doing it this weekend.
(Copied from the other site)
Package of 330 OHM resistors Part# 271-1113
5mm LED of your choice, I choose a Blue on Part# 276-311
Roll of 18-gauge wire, I got a three color package of solid core but stranded would be better (solid core part# 278-1223 )
Snap-in LED mount Part# 276-079
Tap-in clips Part# 64-3052
If all I gotta do is hook up one wire to the ECU lead and ground it, I'm doing it this weekend.
04-16-2003
#17
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Rep Power: 0 That's all you need!!! It was soooo simple. The only thing I don't really like is how bright the LED is when mine engages. I put the LED in the spot beside the outlet. It's the piece that you can pop out. It lights up the whole inside of my car... I think I'm gonna rig a switch to turn it on and off
04-16-2003
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Rep Power: 0 so the vtec light thing works on 7th gens? i haven't been here in awhile and last i checked, it didn't.
as for when VTEC kicked in, i thought it was always 4300 rpms?
as for when VTEC kicked in, i thought it was always 4300 rpms?
04-16-2003
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Rep Power: 0 Originally posted by cheesy9999
so the vtec light thing works on 7th gens? i haven't been here in awhile and last i checked, it didn't.
as for when VTEC kicked in, i thought it was always 4300 rpms?
so the vtec light thing works on 7th gens? i haven't been here in awhile and last i checked, it didn't.
as for when VTEC kicked in, i thought it was always 4300 rpms?
Yup!!! It works....The Vtec kicks in at around 2300 on a hard throttle. It will kick in at around 3000 when just driving under normal conditions. Try it out.
04-16-2003
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Rep Power: 400 Originally posted by OmegaStauf
Do you have to do the resistor? I don't really get the point of that.
Do you have to do the resistor? I don't really get the point of that.
04-16-2003
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Rep Power: 400 Bingo... it works. I used a 470 OHM resistor instead of the 330... that should make it a little dimmer. It's still bright enough to see in daylight. Mine's just rigged up on a bread board right now because I don't know where I'm going to mount it, but I'll probably put it in perf board and mount it this weekend.
I thought I took a pic of it, but the camera apparently didn't go off, so it's the top center plug on the white connector plug in the middle of the ecu. Green with a yellow stripe. I'll post a bunch of pics when I finalize it this weekend.
I thought I took a pic of it, but the camera apparently didn't go off, so it's the top center plug on the white connector plug in the middle of the ecu. Green with a yellow stripe. I'll post a bunch of pics when I finalize it this weekend.
Last edited by Boilermaker1; 04-16-2003 at 02:33 PM.
04-16-2003
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Rep Power: 0 Originally posted by Boilermaker1
The ECU probably puts out more voltage than the LED can handle... so if you don't have the resistor, the LED will blow.
The ECU probably puts out more voltage than the LED can handle... so if you don't have the resistor, the LED will blow.
04-17-2003
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Rep Power: 0 I decided to try a 670 ohm resistor because the LED is way too bright for me at night when using the 330 ohm resistor. I have to say that it puts out light perfectly. I suggest using a higher ohm resistor when doing this mod. Hope this helps.
04-27-2003
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Rep Power: 0 can anyone help me out. i installed the vtech light and i tapped in to the green wire with the yellow stripe like everyone said. and the light stays on constantly!!! also when i ground it to a phillips screw under the dash it dosent seem to ground. can anyone help me out?
