So I have a quick question, I have had my optima yellow top for about 3 years now and I think it might have been used when I bought it. I'm wondering if it's going bad or I should get a new alternator. I have some bass in my car so of course that'll make everything dim. But it plays good for about 2-3 min then starts dimming everything. And also I can sit at night with my headlights on, if I press a window switch or something similar I can hear and see the rpms go down a little bit
. It'd that's good when the rpms go down by hitting a window switch or console light. Also sometimes it almost dies when I start it up. Start it gettin up to 1100 rpm then drops to 3-400.