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Old 10-02-2012, 08:57 PM   #16
Registered User
Join Date: Oct 2012
Location: houston
Posts: 13
My Ride: 2011 m3
I went to use the meter and may have discovered the problem. The AGU fuse you were speaking about - it is inline on a thick grey cable that is attached to the black terminal of the battery. Should that line need to be connected to the red? The reason I ask is that the black ground coming from the amp is connected to the frame of the car. I never even considered this as a mistake because I would think the battery installers would know the right thing. Also, my red batter terminal has the main car connection and a second red connection which I am assuming would be the alternator. Perhaps this alternate red connection made them think the other one had to go to the black terminal?
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