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jizmak55 
Member - Posts: 28
Member spacespace
Joined: December 12, 2009
Location: Pennsylvania, United States
Posted: December 16, 2009 at 9:21 PM / IP Logged  

Wow im dumb could it be that i upgraded the big three with 4gauge and i have 0awg running to my amps? 

Db electrical 200a alt
0awg wiring kit
Yellow top optima
2 pioneer premier TS30004DVC subs
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: December 16, 2009 at 11:48 PM / IP Logged  
Sure can, and probably is.
Charging is easy if you use something like ...
big three - Page 3 -- posted image.
(from another recent on-site OldFart reply)
The aux battery would be your yellow-top in the trunk. (Enclosed batteries MUST be sealed else vented to the outside.)
It is only connected to the alternator (and engine-bay battery) when the alternator is charging.
Otherwise it is independent, hence NOT draining your engine-bay battery.
The "charge lamp terminal" (aka circuit) could be any "over voltage" sensing circuit.
The aux relay as shown will probably have to drive another relay that is rated to carry at least your alternator current (instead of itself being that "heavy" relay).
This assumes limited current sourcing capability from the voltage sensing or charge-lamp circuit.
The circuit shown has been used on 1980s - 1990s Bosch & Hitachi 2-wire alternators (70-120A) which drive both the standard charge lamp (250mA) and the added 68-Ohm relay solenoid (~200mA) of the 60A Aux-relay. (I suspect similar alternators could sink/source up to 500mA, but that might be risky.)
Anyhow, see what you think and we can develop the idea.
With the AGM next to the Amps, you can sell your cap to fund a dash mounted voltmeter and maybe your next battery, or more cabling etc. Maybe even magnetic breakers that can also double as the heavy 200+ Amp relays (aka contactors).
Ah yes - the ultimate zero-drop high current protection and control system. Fuses? Thermal breakers? How primitive!
jizmak55 
Member - Posts: 28
Member spacespace
Joined: December 12, 2009
Location: Pennsylvania, United States
Posted: December 17, 2009 at 10:30 PM / IP Logged  
haha i kinda get it im gonna try the 0awg first and mess around with some grounds.  if that dont work the optimas deffinitly goin in the back. 
Db electrical 200a alt
0awg wiring kit
Yellow top optima
2 pioneer premier TS30004DVC subs
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