How to Upgrade the BIG 3 in my S4 B5

ZeroK66

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Hi Guys,

Well apparently a big thing that should be done in any car with an audio setup is to upgrade the BIG 3...

These are:

Battery +ve - Alaternator
Battery -ve to the body of the car
-ve from the engine to the body

I think that is them anyway... how easy would this be to do on the S4/A4?