Auxillery battery question

[Mazuki]

I have recently setup auxillery battery in my zuki with a powertech mb3670 isolator to run a winch. Second battery is in the boot and with keeping things cheap, i have attached the winch 12v supply cable to the aux isolator post instead of the aux battery terminal .Will this harm the winch, isolator or electrical system?
Cheers, Paul

[sibainmud]

So many variables. It would be OK to use as a junction point but it largely depends on the size of cable and the length of run to the rear battery. IMHO 50mm minimum.
May pay to explain your system with a bit more detail.

Cheers,

[Mazuki]

System is real simple. Isolator has 3 junction posts , alternator feed junction, main battery and aux battery supply junctions. Main battery is supplying all the usual starter motor , lights etc. With aux battery supplying the winch, kind of. Cable from the aux battery to the isolator is a factory mazda rx2 battery cable i had lying around in the shed, must be 10 or 12mm thick, and about 2.5m long. Not sure what imho 50mm refers to though.
Have hooked up a volt gauge to the alternator ,with out a load, volts do not drop below 12v when the winch is switched on. Hope this info helps ,
Cheers, Paul

[sibainmud]

Short answer.....no. 50mm is the square area of copper (not including the insulation) in a cross section. Didn't know how to do a squared sign on a computer
Go to any electrical wholesaler and look at the 50mm DC or welding cable.

Cheers,