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ek lights dim

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Old 02-06-2003, 05:10 PM
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Default ek lights dim

The charging system (alternator and such) is fine I got it checked.

When Im on the throttle below 4k rpm the lights are dim, if im off the gas its bright, if im above 4k rpm its bright, if its idling its sometimes dim sometimes bright.

I have a 96 itr swap. Anyone else have this problem?

Old 02-06-2003, 05:40 PM
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Default Re: ek lights dim (ej6)

do u have a system?cuz i know mine did that when i had a system!i dont know if this will help but it might!
Old 02-06-2003, 05:41 PM
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Default Re: ek lights dim (ej6)

whats the voltage when your battery is charging?
Old 02-06-2003, 06:01 PM
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Default Re: ek lights dim (tominos)

same thing happend when my friend used a obd2 gsr ecu. is your swap obd2?
Old 02-06-2003, 06:21 PM
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Default Re: ek lights dim (hybridcoupe97)

I think that it could be poor grounding wires. I read that with better grounding wires, your lights will not dim. That's why the earthing system is made for I believe. That and for better acceleration and torque.
Old 02-12-2003, 09:15 PM
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Default Re: ek lights dim (fASTBACK)

My car did the same thing when I used the Skunk2 conversion harness and an OBD1 ecu. With the OBD2 ecu I don't have the problem though.
Old 02-12-2003, 10:43 PM
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Default Re: ek lights dim (ej6)

How dim are the lights getting? Dim to the point where you can't see? If so then there is a problem.

If you notice that they just get a tad brighter at high RPMs then I think there is nothing wrong. Mine does it, my friends car does - I think it's just because the alternator is making more power at higher rpms, so the lights shine brither..
Old 02-15-2003, 05:13 PM
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Default Re: ek lights dim (BenB)

My swap is OBDII and the car is a 98.

The lights dont dim to the point where you cant see, but they dim noticably.

Charging was about 14 volts.

Alternator? Well howcome it doesnt do that in an ITR? I have all the grounds. If I want to add another ground where should I add it?

I have a system BUT even with it off it does it.
Old 02-15-2003, 06:14 PM
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Default Re: ek lights dim (ej6)

same **** happened to me

I hit 4K and they were normal, anything below 4K and they would dim. You can still see, but it's ******* annoying.

96 EX w/ b-series

EDIT: stock stereo too


[Modified by madtownhonda, 3:15 AM 2/16/2003]
Old 02-15-2003, 09:08 PM
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Default Re: ek lights dim (madtownhonda)

check all your grounds
Old 02-15-2003, 11:46 PM
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Default Re: ek lights dim (Kid1320)

i had the same problem with mine. i have a 98 hatch with 95 gsr swap. it stopped doing it when i change to an american spec ecu. i think its in the jdm ecu's?
Old 02-16-2003, 07:45 AM
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Default Re: ek lights dim (rathead-ek)

I have a USDM Del Sol VTEC ecu. All grounds are tight. Alternator is new, battery is new. Go figure
Old 02-17-2003, 10:59 AM
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Default Re: ek lights dim (madtownhonda)

Wierd....could it be the fuses? ITR fuses for the battery and headlights are higher ratings then the civic.
Old 02-17-2003, 11:01 AM
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Default Re: ek lights dim (NightHawkC5)

try adding ground lines in teh engine bay, go to home depot and get some power cable.
Old 02-17-2003, 12:19 PM
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Default Re: ek lights dim (ej6)

I have the same problem. Dim as soon as I step on the gas pedal, but after 4k-ish, it's back to normal.

98spec JDM ITR swap, and matching JDM ECU.

Alternator is good.
Added earthing wires. So grounding is good.
All the connections are clean and proper.

I tried a usdm chipped P28 by Katman, and his jumper harness. That solved the problem.

So it's either my JDM ECU, or my jumper harness that's the culprit.
Old 02-17-2003, 02:16 PM
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Default Re: ek lights dim (Mario)

ya I have same prob. 01 ITR swap with HONDATA witha P28 gets on my nerves sometimes errrrrrr
Old 02-18-2003, 03:18 PM
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Default Re: ek lights dim (underrated99si)

Okay now the million dollar question...how do i fix it? get a reprogrammed p28?
Old 02-18-2003, 03:31 PM
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Default Re: ek lights dim (madtownhonda)

same **** happened to me

I hit 4K and they were normal, anything below 4K and they would dim. You can still see, but it's ******* annoying.

96 EX w/ b-series

EDIT: stock stereo too


[Modified by madtownhonda, 3:15 AM 2/16/2003]

Yeah ME TOO... what the heck.. I have a OBD I motor with the skunk 2 adapter harness. same story.

Could it be the ecu? or the harness?

I was thinking that I need more grounds/ better grounds...
Old 02-19-2003, 11:46 AM
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Default Re: ek lights dim (sivik2nr)

Yea Ive heard grounds too but its not that.
Old 02-19-2003, 01:23 PM
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Default Re: ek lights dim (fASTBACK)

That's why the earthing system is made for I believe. That and for better acceleration and torque.
Riiiiiiiight.

Are you guys running stock headlight bulbs?
Old 02-19-2003, 02:04 PM
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Default Re: ek lights dim (98CTRCoupe)

I have a 97 DX with a 99 B18b using the skunk2 obd conversion harness to run a OBD1 ecu and have the same problem. Its really annoying while driving at night especially since all the interior lights dim and brighten too. If anyone has any real clue as how to fix this let me know.
Old 02-19-2003, 08:14 PM
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Default Re: ek lights dim (98CTRCoupe)

I have regular halogen bulbs, and still the problem happens.
Old 02-19-2003, 08:23 PM
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Default Re: ek lights dim (ej6)

well if you have the problem only when you let go of the gas you lose your lights more than likely it the alternator, but if you got a big watt amp it may be pulling to much power from the car? have the charing system checked my a local machanikc you trust.
Old 02-20-2003, 04:07 PM
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Default Re: ek lights dim (ricerocket2nv)

well if you have the problem only when you let go of the gas you lose your lights more than likely it the alternator, but if you got a big watt amp it may be pulling to much power from the car? have the charing system checked my a local machanikc you trust.
Ive checked the charging system and its fine....over 14 volts throughout. My amp isnt big...but even when its OFF it still does this.
Old 02-20-2003, 04:12 PM
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Default Re: ek lights dim (ej6)

i have that problem when i let off the gas pedal to decelerate...


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