My car starts on the button every time (touch wood)but lately I have noticed that when I switch the car on the head lights are nice and bright but the more things I turn on A/C, radio, electric windows, etc, etc the dimmer the lights get this doesn't change with the bass beat of the music or when I rev the engine but my lights are constantly dim. Anybody know what the problem is?

Cheers Alistair

 

Ya need a bigger amp!!

Seriously though, check the alternator. But if it was knacked, you'd have drained the battery by now. Plus, I take it, if you switch everything back off, the lights get brighter? Confirms alternator's doing something.

Alan

 

Would suggest you try the earth mod! Costs next to nothing, and may just fix your problem. It fixed all mine, and the car runs better at idle too!

Note: The Standard Scooby Wiring is wholly inadequate for just about anything. It sounds like you are just drawing a lot of current, and don't have good enough earths to maintain the voltage.