Not on my g40 but my gt has some earthing problems
Indicators are all over the place and weird things like the switch light for heated screen and drivers side light come on everytime I brake lol.
I've put a new alternator strap on and cleaned up some earthing points but not sure I got them all.
Any advice welcome to help fix it cheers
all the earth locations
http://www.polog40.co.uk/forum/index.php?topic=4599.0