The thing the Regulator does is regulate the Voltage to somewhere between 13.5 to 15.5 volts. So that's why it is most important to check the voltage. Nothing else really matters.

Okay so i got back my alternator put it up and got it running.checked the charging rates an it was spot on but still not charging.Ran to the wreckers and picked up a used regulator box and hooked it up now every thing is running perfect so i just wanted to let you know what was the end result,a bad regulator box...

I'm going to carry the alternator by another electician tomorrow to get it checked on again the guy before had no clue what he did an put me in a bad situation yesterday. So i'll get back the alternator and put it back on and get the charging rates an put it back up for you DD. Battery terminals are all good and ground straps are in good contact and clean.

Quote:Very very common cause of this is a battery cable connection that is not spotless. See http://datsun1200.com/modules/mediawi ... title=Battery_Maintenance

Quote:Even a good battery with bad connections will appear dead. It will also start right up with jumper cables. Cleaning is the first thing to try when these symptoms occur.

If the alternator is charging (13.5 or higher volts) for at least 15 minutes and the cables are clean, and this still occurs then the battery is most likely worn out. Replace the battery.

Ok sinario is took alternator to a electrician came back an put it on an drive he told me drive an let the battery build back up .when driving for the whole day went to start back and only getting a click click battery was dead is it possible the alternator is nor working?

"Thanks it all started when i was driving the light started flashing slowly then later now its staying on,i checked the fan belt and its tight"

I've had this happen three times as you have described.
Each time found the brushes worn down as DD shows.

I had a 1200 where the light stayed on below 80kph. Then the battery died, leaving us stranded 4.5 hours from home on a monday night. New alternator cured it

Quote:That is not a valid test. the results are meaningless.

What you should look out for is that with engine running, the alternator is putting out 13.5 to 15 volts. That is good. Anything lower or higher is bad.

Carried the alternator today to get it serviced,came back and put it back on car starts perfectly.turn key on starts engine charge lights goes off.now when i take off the negative battery pole car cuts off.fella told me to bring back teh car after i put the alternator back on.Anything to look out for?

Check the brushes, it's easy ...




New vs. worn-to-the-limit brushes

http://datsun1200.com/modules/mediawi ... r_Maintenance#Brush_Check