Alternator is not working.....

[Florida240sx]

Gravetolife was just here in Florida and his car broke down. Alternator refuses to give charge. His burned out, I took him one of mine which was workign and upon installation it no longer worked. I went and bought a new one for him and it still didn't give him a charge. What wiring is there to make the alternator work? Everything was hooked up correctly. His dad drove down from Indiana and towed him back...he's still on the road... Any ideas on what could be wrong?

[vancouverbc]

what year/model? did you check for blown fuses? red=positive; blue=negative


Modified by vancouverbc at 6:02 PM 7/21/2006

[Florida240sx]

Only one fuse was blown which was interior dome lights...I just made this to see if he can get any hits. He's going to replace the whole wiring harness when he gets home...

[180fan]

The bulk of the wiring is at the transmission harness.

[nukeone]

Double check the small white with red strip wire. I don't remember for sure, but I believe it is labeled as "L" on the rear cover of the alternator. This line provides the field flashing/excitation that makes the alternator create its alternating current (yeh, I know, diodes then convert it back to DC). With the ignition switch in the ON position, you should have a constant 12 volts at this terminal. If it is not a good connection, you will not get an output from the alternator since their is no field current (3 things required to generate electricity... field, conductor, and relative motion between them).

[srpowered240sx]

stupid question. my buddies sr s13 just did the same thing. it ended up being the 75 amp alt fuse under the hood. just a thought, easy fix, just had to find it for him.