He did say the wire wasn't connected.......
Jim
On 28/06/2011 22:10, Dave the Subbie wrote:
You may just find that the bulb has blown in the dash, or has a bad
contact.
It's a classic problem: The bulb lights when the battery is exciting
the alternator field coils. So, once the alternator starts to turn,
the magnet moving in the field generates a current that then excites
the coils itself and the bulb goes out.
No bulb means that the coils are never excited, therefore no current
is generated and the alternator "doesn't work".
The way to check is to measure the voltage on the blue wire with the
alternator disconnected. It should be 12V when you switch the ignition
on. If not, then trace back to where it comes out of the loom. If
still no joy, remove the dash and check for 12V on both sides of the
bulb. If only on the input, suspect the bulb, if neither, then trace
back through the wiring to find out why.
Hope that helps,
Dave.
On Jun 28, 7:28 pm, [email protected] wrote:
'we decided the alternator was at fault'
could be worth getting this checked professionally - at least you would
know if you could sell the original - if it has not gone in part exchange..
Michael
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