I've experienced this problem with my own 91 Si. $130 alternator was my
option, until a friend recommended I change the brushes in the alternator
first. Pull out the alternator, and slowly disassembled it. I had Chilton's
book to guide me. After removing the brush assembly, I noticed one of the
brushed did not spring out as far as the other and was quite worn. Call
around and found it for $10 at an alternator shop. BTW they are available
from the dealer, special order. Reassembled and reinstalled in my Civic.
Put on a new belt for good measure. Has not given me a problem since.

JW

"Wayne" <xbiggwbx@aol.com> wrote in message
news:d701e21f.0312261613.476db5f4@posting.google.c om...
> Hello!
> I own a 1990 Honda Civic, 4-door/4 cylinder car. When driving, I
> noticed that my headlights and dash board lights get very bright, and
> then dims back to normal. At the same time this happens, my defroster
> fan motor, speeds up and then slows down to normal in conjuction with
> the headlight and dashboard lights.
>
> I also notice that my battery light on my dash board flickers on and
> off occasionally apart form the dash board lights.
>
>
> Oh by the way,
>
> My alternator was replaced March of 2003. Prior to changing my
> alternator, my battery light constantly stayed on.
>
> My mechanic recently checked my fan belt and told me that it was o.k.
>
> Does anyone have a solution to what this problem might be?
>
>
> Please email me: xbiggwbx@aol.com