alternator or electrical problem????

[prico1976]

the alternator light came on just put a new alternator the light still on and when i disconnect the positive from the battery it shut off. what could the problem be? thank you for any feed back

 

[warmonga]

dude most likely your alternator needs to be replaced.. take the car to autozone they will let you know if the alternator is shot..

 

[prico1976]

is not the alternator i also replace the fusible link by the starter and no luck

 

[pontiacgp]

I'd be looking at this connector on the regulator

 

[prico1976]

how do i test it and what should i be lookin for? i know when i disconected it the idiot light for charge goes off

 

[pontiacgp]

the smaller of the two wires has to excite the alternator or it won't charge. The heavier wire should have 12 v to it when the car is running.

 

[wrenchbend1]

Start the engine and put a test light to all three terminals on the alternator ALL three should light up that is the main fat battery red lead and the two terminals in the plug. let us know your findings !

the alternator light came on just put a new alternator the light still on and when i disconnect the positive from the battery it shut off. what could the problem be? thank you for any feed back

 

[prico1976]

thank you for all your help guys. i know for sure is not the alternator. i pulled out the alternator and put it in my other cutlass to test it and is charging fine. i must have a wiring problem. with the engine running from the two wire connectors i get 12v on the red wire and on the brown wire i get 2.7 volts. when i do the same test on my other car with the engine running i get 12v on both wires. so what can be my problem this is so frustrating.

 

[Pit]

Have you check the engine ground?

 

[prico1976]

where is the engine ground?