Battery warning light stays on

[Smithy]

Hi guys new here and new to Bays so please be gentle. I purchased a 78 Bay 2ltr about a month ago. 2 days ago I had a flat battery, mechanic jump started me. Took the van for a drive when got back I noticed the battery warning light was still on with the ignition off and key out. Any ideas?

Many thanks Smithy

 

[sparkywig]

Hello, and welcome to the forum.
I would say that the regulator pack on the alternator has blown, that might be why your battery was flat.

 

[davidoft]

Hello, and welcome to the forum.
I would say that the regulator pack on the alternator has blown, that might be why your battery was flat.

Regulator is separate on a 2ltr

 

[davidoft]

Hi guys new here and new to Bays so please be gentle. I purchased a 78 Bay 2ltr about a month ago. 2 days ago I had a flat battery, mechanic jump started me. Took the van for a drive when got back I noticed the battery warning light was still on with the ignition off and key out. Any ideas?

Many thanks Smithy

Sounds like either a dodgy dash connection, faulty regulator or faulty alternator

Regulator is probably easiest to check , is your van fuel injection or carb ?

You should have a hatch in the back too

 

[Smithy]

Hi thanks for replies, it’s twin carb.

 

[Smithy]

Sorry I don’t know much about these things. I know there is a separate regulator that switches charge between starter battery and leisure battery.

 

[sparkywig]

Hello, and welcome to the forum.
I would say that the regulator pack on the alternator has blown, that might be why your battery was flat.

Regulator is separate on a 2ltr

Then it's likely to be the wiring between the alternator and regulator, or the regulator itself.

 

[67panel]

It is most likely a faulty diode in alternator allowing currant to back feed, if you dont know a diode is a one way valve for electric. Might be a faulty reg though as solid state . Not likely to be a wiring fault .