Quote:
Originally Posted by hepp25
i have a 86 F-250 wirh dual batterys but i want to put a isolator on but i dont know if i could or sould. people tell me i cant do it because then me truck wont start but i thought that the isolator only charges my battery so my alt isnt over working itself. so please help
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As I understand it, A battery isolator is nothing more than a power diode. It allows current to flow through it in only one direction. It is used (requiried?) in high wattage audio systems when two batteries feed the radio by using seperate power lines -- one power line from each battery.
The two power sources would be connected to two input terminals of the battery isolator. The radio would receive it's power from two of the output terminals of the isolator. Now if one of the batteries were to short, high current from the good battery would not dump into the shorted battery, via the expensive audio equipment.
The batteries in our trucks are tired in parallel to our charging/starting system. You would not want to break this very high current connection with a battery isolator. Your truck would not crank.
Running a seperate wire from each battery to an isolator is not going to protect your audio equipment either, because the starter motor's high current connection is still present and nulls out any protection from the isolator.
If you need the high current, use a FUSED large gauge wire from the passenger's battery. It needs to be fused. Did I say it should be fused? I think I did.
By the way, fuse the wire.
battery isolators
Linear Mode
