STOP + Battery light only over 60mph

[Derelict-UK]

Driving round town, the car is fine, no warning lights, but when you go on the motorway and drive above 60mph the STOP + Battery lights flicker and then stay on, if you dip the clutch, the warning lights go off.

The car starts first time without hesitation.

I have just checked the voltage of the battery and they are: (off) 12.95 (idling) 13.9 - 14.1 (full load) 12.23

I had a reconditioned alternator fitted about a year ago, maybe less. Battery as about 4 years old.

I am not sure if this is anything to do with it but my radio signal occasionally drops silent for 4 seconds then comes back at perfect signal.

Any ideas?

 

[MicKPM]

Alternator is goosed chap

 

[Paprika123]

My 182 done this, The light went out at high revs though....until it needed revved past 5k.

A new alternator fixed it.

 

[Derelict-UK]

My local garage changed my alternator under it's 12 month warranty, new brushes added, problem solved, cost £0.00, happy bunny

 

[MicKPM]

Needed these after 12 months!?! Well, at least it is fixed. Did they replace the aux belt setup or even check it?

 

[Derelict-UK]

It was a reconditioned alternator so maybe they didn't change the brushes? The belt was changed in January. Everything works as it should do now.