[richard3009]

2004 twinport 1.4 exclusive, when I rev the engine from idling with the headlamps on the dashboard illumination gets brighter relative to the revs, also when I use my indicators the dashboard gets brighter and duller in time with the flashes. Battery also runs down flat if left for a week without use. Brand new battery has been fitted, I'm thinking bad earth connection, any ideas?

 

[Rob]

alternator not charging.

 

[richard3009]

Would I not get a dashboard warning for that ?

 

[Rob]

not if its a partial charge fault

 

[richard3009]

will have to check it out, whats the best way to test it ?

 

[AJ]

Use a multimeter to test voltage on battery - around 12v is good
Then start the engine and do the same - around 14v is good

If its less than 14v, alternator isn't giving enough voltage.
Unfortuanatly, you need a pretty depict meter to set the current the alternator is giving out, but this is a good starting point

 

[Sjw102]

If that checks out ok, run a jump lead from your batt earth to ur chassis, n see what it's like