alternator light came on and the speed-o, temp gauge and rev counter stopped working?

2004 VAUXHALL MERIVA
34,000 MILES • 4 CYL • 2WD • MANUAL
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FJO
  • MEMBER
  • 1 POST
Hi the alternator light came on and the speed-o, temp gauge and rev counter stopped working. Sometimes the light goes off and the instrument panel works ok. The AA told me it maybe loose earth wire

Thanks for your help
Sep 6, 2010 at 4:14 AM
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SQM
  • CAR REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

It does sound like a faulty wiring in the charging system which is intermittent.
You will have to check the main battery wires for any corrosions or damages.
You will have to trace the wires and see where the issue is. Check the ground wire. Make sure it is connected on the chassis.
You can also check various wirings by using a multimeter.

You might find this article helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Please let me know of any questions.

Thank you.
Aug 16, 2021 at 10:53 PM
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