Originally Posted by 07bluezx14
comparing sizes, of either yellow top, or red top, vs a group 48 battery, a 34, or 34/78 size, is 10" L x 6 7/8 W x 7 13/16 tall at the posts. I assume 1/4 inch taller will be ok. If I get the yellow top, I might be able to do the big three upgrade, but was hoping to have it done at the stero shop that installed my system. yellow top 750 cca, 870 ca, reserve 120 capacity 55. red top 800cca, 1000ca, 100 reserve, capacity 50. This is why it is frustrating me, Some say get a normal battery, some say red top, some say yellow top. capacitor some yes, some no. If I get the optima battery, I can't get a cap right now. is the big three something easy to do, as far as getting to all of the wires? I'll have to have the car in the air, to do my fog lights anyway. AHHHHHHHHHHHHH I'm getting a headache. Thanks for all of the suggestions, chris
Write down what you plan to do, and the order in which to do it.
faiz23 has the right idea, in terms of the order to do things, but his solution (which I would recommend) involves two batteries and therefore more complex wiring and a dual battery system solution. If just buying the Optima battery leaves you low on $$ then the dual-battery solution is way out of reach for now.
Make sure you put a right-sized circuit breaker between the battery and the lead going to your high-power components. An 8 gauge wire and 30-40 amp breaker should be a good starting point. Remember, even if the fuse in the amp blows, if the wire from the battery to the amp shorts on something, and you have no breaker between it and the battery, your car is going to burn to the ground.
If you have an HID system already paid for, do that and see what happens. Then do the "big three" next - it's cheap and if you take the time to look up the wiring in the factory manual and trace them down in the car, should be reasonably easy.
Then see where you stand. If that's still not enough, look at the Optima. Problem is, the terminals or poles might be wrong and you will have to deal with that. More $$.
Go see the Optima web site and call them.
Optima recommend a Yellow Top battery for
the sound system side of a two battery solution and they're right. Just read the web site. And don't let anyone tell you it's marketing B.S.
If you're still having troubles trying to understand and figure out how to do this, you probably should let someone who does it for a living at least help you. There's a number of things that you can do that will not come out well if you make a mistake.