[oddjobbb]

when i pulled into the garage tonight the alternator light started to flicker as the car idled. its a 72 w/ a 302. what should i look for.thanks randy

 

[johnpro]

Start by checking the voltage across the battery posts while the car is idling. If the charging system is working right, you should have about 14v.

 

[dailydriver]

After checking battery voltage with engine running as John suggested, you can take it to your local Pepboys, Autozone, etc. They will check the charging system for free. A bad voltage regulator can cause the symptom you described, as well.

 

[Johnbear]

The only time i got the alternator light to come on is when i ran the car without a battery.

 

[1966conv]

Randy, along with the other suggestions, check the belt. I had a similar situation, turned out that one of the bolts had not been tightened and I lost belt tension.