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post #1 of 15 (permalink) Old 09-03-2013, 06:29 PM Thread Starter
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Headlights dim when subs hit?

When I'm sitting at idle with the subs turned up on the radio but only about 40% of the amp the headlights dim a little and come back when they don't hit. Any ideas?


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post #2 of 15 (permalink) Old 09-03-2013, 06:36 PM
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What size is your amp and sub?


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post #3 of 15 (permalink) Old 09-03-2013, 06:36 PM
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what size amp?
Do you have a capacitor?

My best guess is if you get a capacitor it will help, and could also be the alternator,


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post #4 of 15 (permalink) Old 09-03-2013, 06:37 PM
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Subs can be taking to much power from the amp which causes lights to dim


2010 Cobalt 2LT Sports Package
2.5% tint all the way round.
SUPRRAAACHARRRGGEDDD
2.9 pulley, 60# Injectors, Injen 2.5" intake
55 Watt 6000K Hi/Lo HID's
35 Watt 5000K Fogs
Black SS 17" Wheels
Debadged
Spyder 3" Carbon Fiber Antenna
YAKIMA ROOF RACK WITH 40" LIGHTBAR
2.5' ZZP DP
Full set of Black Recaros
Eibach sportlines for teh low.
Front and rear SS lips
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post #5 of 15 (permalink) Old 09-03-2013, 07:28 PM
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Normal,normal, normal at idle because you're not getting any assist from your alternator at low RPM. Try and see if they still dim at 100 mph.

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post #6 of 15 (permalink) Old 09-03-2013, 07:29 PM
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Lol


2010 Cobalt 2LT Sports Package
2.5% tint all the way round.
SUPRRAAACHARRRGGEDDD
2.9 pulley, 60# Injectors, Injen 2.5" intake
55 Watt 6000K Hi/Lo HID's
35 Watt 5000K Fogs
Black SS 17" Wheels
Debadged
Spyder 3" Carbon Fiber Antenna
YAKIMA ROOF RACK WITH 40" LIGHTBAR
2.5' ZZP DP
Full set of Black Recaros
Eibach sportlines for teh low.
Front and rear SS lips
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post #7 of 15 (permalink) Old 09-03-2013, 08:11 PM Thread Starter
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It's a alpine 550 or 600 I can't find the box. I wanna say. With 2 sdx pro audio 12's on it. No capacitor, I never noticed it till today when I was sitting with my headlights against the wall.


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post #8 of 15 (permalink) Old 09-03-2013, 08:12 PM
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Normal again normal..

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post #9 of 15 (permalink) Old 09-04-2013, 05:11 AM
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is it still normal, or is there a problem yet..


2010 Cobalt 2LT Sports Package
2.5% tint all the way round.
SUPRRAAACHARRRGGEDDD
2.9 pulley, 60# Injectors, Injen 2.5" intake
55 Watt 6000K Hi/Lo HID's
35 Watt 5000K Fogs
Black SS 17" Wheels
Debadged
Spyder 3" Carbon Fiber Antenna
YAKIMA ROOF RACK WITH 40" LIGHTBAR
2.5' ZZP DP
Full set of Black Recaros
Eibach sportlines for teh low.
Front and rear SS lips
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post #10 of 15 (permalink) Old 09-04-2013, 05:39 AM
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Quote:
Originally Posted by JacksonWilder3 View Post
is it still normal, or is there a problem yet..
Dude, that means you got it hittin' just right! No worries!

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