alternator? tested good still get battery light

[Anubis_4_99]

Hey all I need some help, my NT is being a pain.

I have a 2 month old battery and alternator, both have been tested good, but I'm still getting a battery light at random. Earlier my lights got brighter then normal, then went back to normal and the battery light came on.

I took the post off the battery to check that the alternator would still run the system solo and it does. I'm stumped. I've checked my connections, my battery and my alt, and the belt as well, what could it be?

 

[Locke]

Could also be the regulator or the wiring.

 

[Anubis_4_99]

Are the 2g's internally regulated or external? I found my starter signal wire wiggled loose today cause she didnt want to start this morning, but i doubt that could have much to do with the battery light..

It will go a couple of weeks without coming on, then it will come on all day every time i shut the car off, then restart and drive like 5 miles and it will pop back on. Then wont do it again for a week or two. its very frustrating .

 

[Slo2gen]

voltage is regulated by the ECU for the alternator.