Lights dim when break is pressed [Archive] - GrandAmGT.com Forum

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White Puma
12-06-2004, 01:38 PM
I noticed lately that hwne I press on my break pedal my lights dim for a split second. Anyone have any clue as to what may be cuasing this?

Thanks.

Matt95GT
12-06-2004, 01:44 PM
My 95 has done it since I purchased it. (1/2000)

At low idle, it will happen slightly for a short interval due to the initial current draw of 4 bulbs... all while the electrical system is loaded down already from parking/marker/headlamps/engine/accessories

iceman
12-06-2004, 01:45 PM
Yup normal with stock electrical system and incandescent bulbs..

Mike Jung
12-06-2004, 01:46 PM
The power consumption of the 7-light bulbs that are used in the brake lights.


IMO, alot better visually than some other vehicles that only use 3 little light bulbs for the brake lights.

White Puma
12-06-2004, 01:46 PM
Thanks everyone.

Azrael
12-07-2004, 03:58 PM
It's even worse when the ABS kicks in. Which is pretty frequent this time of the year here.

mchristy
01-25-2005, 08:38 AM
I know its not critical but is there any way to beef up the power so that it doesnt dim?

Nirbush
01-25-2005, 09:08 AM
cool i was gonna ask the same question my friends notice at night when i hit brakes my radio light dims down, and yeah what mchristy said is there a easy solution to this just seems like to much power being used?

carsarecool
01-25-2005, 09:18 AM
a higher output alternator, generate more current(amps) but takes more power from the engine as well. Yeah ABS really saps a ton of power, everything dims whenever i stop on the snow

Matt95GT
01-25-2005, 09:50 AM
I doubt it... all my GM V6's I've owned idled at a very low RPM. All alternators will have poor output at low RPM, even high output upgrades.

Mike Jung
01-25-2005, 06:41 PM
I know its not critical but is there any way to beef up the power so that it doesnt dim?

Get a 'bad-ass' battery.
Like an Optima Yellow Top (or Red Top) battery :thumbs:

When your car is like idling speed, the car's alternator does not turn too fast & makes little power.
So it really relies on the battery to supply most of the juice (especially if the AC is on).

Guga2495
01-25-2005, 07:36 PM
Mine does it to, something weith the ABS and giving it the power to work, and it takes it form the lights some of it its weird i know

ancona46
01-26-2005, 06:05 PM
my car has done it since the day i bought it its annoying as hell....its funny when u bring it to the dealer and they pretty much say the charging system in theses car suck