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Hey Guys,

Hopefully you guys can help me fix the electrics in my mk4 golf.

Basically, the worst problem is that when lots of stuff is on (high beams, wipers, stereo) and you turn on the indicator, the radio will sometimes turn off. Its super intermittent. If I watch my volts while driving, they can get as low as 11v which seems ridiculously low. The battery has never struggled to start the car, even when its been left for a week or so, so I dont think its that and when the indicators are on, they make the headlights dim.

I reckon its the alternator because of the drop in voltage when things are running.

What do you guys think? What and how can I test my theories?

Thanks!

Christian

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Hey Guys,

Hopefully you guys can help me fix the electrics in my mk4 golf.

Basically, the worst problem is that when lots of stuff is on (high beams, wipers, stereo) and you turn on the indicator, the radio will sometimes turn off. Its super intermittent. If I watch my volts while driving, they can get as low as 11v which seems ridiculously low. The battery has never struggled to start the car, even when its been left for a week or so, so I dont think its that and when the indicators are on, they make the headlights dim.

I reckon its the alternator because of the drop in voltage when things are running.

What do you guys think? What and how can I test my theories?

Thanks!

Easiest way to check in put a multimenter across your battery terminal and measure the voltage... should be above 13-14vols if not your alternator is going

Dazza

Christian

Alternator sounds like the culprit, or main wiring (ie earth, b+ to the alternator)

Check your earths too as they can cause funny electrical problems like this too. Best bet is with a multimeter measure voltage from your negative battery terminal to the various body earths on the car with all the accessories turned on. Anything over 0.2 volts can cause grief especially under load.

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