This usually means the brushes are worn too short and are only barely
making contact, or at least one of them is. If you take out the 2 small
screws and remove the brush/reg assembly you can see. I have found that
pulling the brush out will slightly stretch the wire that is acting as a
leash. Then the brush will make good contact again for a little while.
If this works for you then you will know to order a new brush/reg
assembly quick.

Always unhook the battery ground cable when working with the alternator.

Mark

B Feddish wrote:
> My battery and ox light keep coming on at the same time. They stay on for awhile then go out again.  I have the van parked now and while I have been checking the voltage at the alternator the lights have not gone back on. I think they will go back on again when I drive. The voltage at the alternator was 13.5.
> This may be a coincdecence but the OX light was on for my drip down yesterday and I crawled under the van to shut it off.
> Any suggestions and if by chance my alternator is bad how far can I drive on a battery without the headlights? I have a full Aux battery too.
> Thanks,Bryan