Lights Still Dim with HO Alternator.

[njknittle 10+ year member]

Anyone know the problem? I still have a stock Battery, other than that everything that could be done to the car has been done. Electrical wise. its a 200A Excessive Amp Alt, and only a M-1000 Alpine amp, i dont get it?!

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[Falcons 5,000+ posts]

Anyone know the problem? I still have a stock Battery, other than that everything that could be done to the car has been done. Electrical wise. its a 200A Excessive Amp Alt, and only a M-1000 Alpine amp, i dont get it?!

lights are sensitive to voltage. its nearly impossible to stop

 

[Full Tilt 10+ year member]

Buy HIDs.

 

[njknittle 10+ year member]

Ok, i feel a little bit better now

 

[05trailblazer 10+ year member]

You need more battery reserve an alt isn't enough

 

[05trailblazer 10+ year member]

What's the lowest your voltage is dropping?

 

[Buck 5,000+ posts]

Buy HIDs.

No, mine still dim! This is shit! //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

Why do I seem to have the only dimming HID's in the world? I drop from 15.1 to 14.2 at the absolute lowest, and that basically 1 volt of difference makes my lights dim more dramatically then I would expect.

 

[Worlddre 5,000+ posts]

light brightness is directly related to voltage level. Voltage drops will cause lights to dim. You have something causing a voltage drop...find the voltage drop and your problem will be solved

 

[Buck 5,000+ posts]

You don't have a high powered system without voltage drop. I wonder if you can step down the voltage to your head lights to like a consistent 12.5v or something so the voltage never drops?

 

[keep_hope_alive Premium Member]

monitor voltage and report back. note the HO alt only does about half it's output at idle, so with the lights on at night you have even less current available at idle. at 2500 RPM the lights shouldn't dim. if so, you are just taxing the system.

and a "stock" battery is not recommended. it should be a new battery with adequate size, preferably AGM

 

[Buck 5,000+ posts]

Lol my 300 amp does like 80 at idle.

 

[njknittle 10+ year member]

My voltage never drops below 13.5 give or take .1. And is 1000w considered high power? Haha, i mean im looking to buy a crescendo BC3500, for the sundowns.

 

[Buck 5,000+ posts]

monitor voltage and report back. note the HO alt only does about half it's output at idle, so with the lights on at night you have even less current available at idle. at 2500 RPM the lights shouldn't dim. if so, you are just taxing the system.
and a "stock" battery is not recommended. it should be a new battery with adequate size, preferably AGM

I would consider high powered 1000w + (where you really need to start adding batteries, alts, etc)

 

[keep_hope_alive Premium Member]

agreed. i'm not saying to have a second battery, just that the main battery needs to be 100% in order to keep up. but the alt is what powers the vehicle/system when the car is running.

just because someone "does the big 3" doesn't mean it's done well or that they didn't introduce more resistance in connections. how a connection is made is 10x more important than the wire used.

 

[mlstrass 5,000+ posts]

I'd check BIG3 grounds and headlights grounds also.

I've NEVER seen HID's dim, that guy has issues somewhere...