I have a 91 acura integra i replaced the alternator maybe 8 months ago. but sunday i was playing around with one of my buddys and when i hit 2nd gear and it started spinning the battery light came on. ive checked all the grounds the fuses and the connection for the alternator. i dont know if this has to do with anything but earlier that day my fog light blew so i just took out the bulb and didnt put anything back in it.

 

I have a 91 Integra GS. I go through alternators about once a year. Those things are usually rebuilt, and they can fail even after a few months. Pretty sucky.