Ok so just finished up doing the 130A (3G) alternator swap, following the instructions on here (upgraded wiring, fused) and it worked great!
The whole reason for doing the upgrade is that the sub and amp were causing the dash lights, headlights, and battery to get demolished because the 75 amp one just wasn't enough power. Problem is, is that this problem still exists even with the new alternator. With the sound system turned off or down, the system reads 14.6-15V at idle and the headlights flicker a little, dash lights are ok.
With the sound system cranked, the dash lights flicker like crazy and so do the head lights. The voltmeter reads at around 12-13V too. The sound system never cuts out though. I'm starting to think something like a bad ground but I'm not sure. Don't know a whole lot about Mustang electrical. Also, this sound system was put in by the previous owner so I have no idea what has been done.
Some suggestions will help greatly guys. Thanks!
The whole reason for doing the upgrade is that the sub and amp were causing the dash lights, headlights, and battery to get demolished because the 75 amp one just wasn't enough power. Problem is, is that this problem still exists even with the new alternator. With the sound system turned off or down, the system reads 14.6-15V at idle and the headlights flicker a little, dash lights are ok.
With the sound system cranked, the dash lights flicker like crazy and so do the head lights. The voltmeter reads at around 12-13V too. The sound system never cuts out though. I'm starting to think something like a bad ground but I'm not sure. Don't know a whole lot about Mustang electrical. Also, this sound system was put in by the previous owner so I have no idea what has been done.
Some suggestions will help greatly guys. Thanks!