i was on the highway duin about 90 and my battery light and my brake light came on it would flicker at first then it would eventually stay on i replaced the battery and the alternator about 2 months ago i made sure the terminals were securely on car seems to run ok but my CEL was already on and i checked it a couple of weeks ago and it was my o2 sensor just wondering what else it could possibly be thanks

 

Batt and brake light is charging circuit, simple as that.

Have you checked what voltage it's putting out?

 

is it ok to drive??

 

so i was coming home from my girlfriends house and my abs light came on battery light air bag light was blinking my lights were fading out the car was bucking hesitating and i made it like a mile then it finally died. I think i have a faulty alternator it sounds like i do but is there anything else it could be let me know thanks

 

Check the wiring from the alternator.

If all that is good, test and replace the alt.

 

has to be the alternator is not charging the battery enough

 

did you check for codes??? c'mon diude, common sense to do that first.

 

i did it was only the o2 sensor