HELP!!! Split Charging System

[Stu_c]

i have got a yellow top battery in the boot of my car and a battery in the front, i have got a split charging system but i am not sure how it wires in, i need to connect one wire up to a wire on my clio that goes positive when the car is running does anyone know where a wire is that turns live not when it is in accessory but when the actual engine is running

Help needed

Posts will be greatful thanks

 

[Dink]

that is a difficult one i'll have a think about that

 

[Da]

erm... when you say split charging system, what exactly does this consist of?

 

[Dink]

basicly uses a high power relay to isolate the rear batt from the electrical system but still allow the ice to work while the engine is off

 

[Da]

So the rear battery is only connected to the charging system when the engine is running? Surely then the relay/connection to the charging system (for the second battery) should be made after the alternator on the main feed to the primary battery? But wont a heavier duty alternator be required to charge 2 batteries at the same time?

 

[Dink]

yeah he just needs a cable that will supply 12v to the relay coil only when the car is running

 

[Da]

ah i see, hmmm... nearly everything runs in accessory mode! lol

 

[Stu_c]

i found out the alternator current wire so thanks for the help people