There isn’t a 3aw on your car, that’s for cars with 11AC alternators.
How are you checking the bulb & wiring for the warning light? You don’t apply 12v to the wire where it connects to the alternator. It will have a 12v supply from the ignition, you need to earth the small wire on the alternator plug. Then turn the ignition on to the run position, but don’t start the car. If that doesn’t make the light illuminate, check if there is 12v at the bulb socket.
Do you have a wiring diagram? It makes everything much easier to understand.
If you’ve had the dash binnacle out, there’s a possibility you’ve dislodged a connection behind, it might be a simple fix.[/QUOTE
Well Tom you are right, I took the front off the dash, checked the bulb which was ok. I got the bulb to light by connecting an earth with ignition on, I did a continuity check on the connection from the alternator which showed a fault.. I took the rest of the binnacle out and lo and behold the brown and black wire had come a drift from the multi plug. Easy fix, I have an ignition light although it still glows when the car is charging I am sure a change of alternator will fix that. Thanks for all your help and patience.