Date registered: Jan 2006
Vehicle: 73 280SE 4.5, 71 300SEL, 03 BMW Z4, 72 Fiat 850, 80 Triumph TR7, 85 Porsche 911
Location: DC Area
Mentioned: 1 Post(s)
Quoted: 95 Post(s)
35 amps doesn't do a decent sound system a lot of justice. Somewhere in the owner's manual, it'll tell you how much amperage the new system draws. Take that, add in extra for an amp if you have one, headlights, etc, and you'll probably hit or exceed the rated output for your alternator.
You'd have to probably rig up a specialty bracket, but you could easily upgrade to something with more juice - a modern benz unit or something less expensive from a Chevy or Ford.
If you want to test your alternator, take it to an autoparts store - the ones here all test the things for free. I'm about 99% certain yours has an internal regulator. You can also have the battery tested at the same time.