Battery light on when ignition turned off!

[Chimaeratrev]

Hi,

Am new and hope somebody may have seen this problem.

Have fitted a new battery and everything seems to be fine, Trev starts and runs perfectly. All electrical devices have been checked and seem to work just fine.

Problem is when ignition turned off and key removed, the red battery light glows dimly and the yellow and green lights around the heater controls also glow dimly.

Any advice would be great,

Thanks in advance.

[spend]

Diode around the hazard switch wiring probably failed.

[jvr]

like mine could be the diode in the altenator,try flicking the wiper arm when the ignition is off and see if the lights go out,or if any other switches do the trick.
P

[Chimaeratrev]

Hi JVR,

Looks like you are spot on! Flicked the wiper arm without ignition - green and orange lights around the heater controls go out and the red battery light brightens a litle. Release the wiper arm and the heater lights come back on and the battery light dims! Tried other switches/buttons but nothing else seemed to make any difference.

Am intrigued to know why the heater lights come on in the first place and why the component might fail!

Is the answer to replace the component on the alternator?

Kind regards,

Chimaeratrev

[jvr]

mine has a recon altenator fitted by the previous owner but the only way is to replace the altenator again,something I Haven't done yet.
P

[spend]

If you have a LED warning light none of that makes any sense to me as its a diode itself and any higher PD at the alt sense would only feed back (via the parallel resistor to the LED) into the dash circuit?

[Chimaeratrev]

Hi Spend and JVR,

Thanks for information - well over my head!

Not sure if Battery light is a lamp or LED (Trev is on an S plate)but will look around next weekend at relays/voltages Etc. Have since read a huge number of threads on this and had no idea it was such a bag of worms. Having had Trev for 10 years, he has been 100% reliable - this is the first item to fail.

Many thanks for all of your input, will post a solution if I find one.

Best regards,

ChimaeraTrev

[madasafrog666]

Had exactly the same problem last year. Test the wiring, it may be a diode in the altarnator. In my case the altarnater was knackered and I replaced it with a new one problem solved.