Dump Load Diverter Connection ?

[Hipster]

I just purchased a 600 watt dump load diverter - it will be used to just discharge a large battery -

but i am not sure which side is the Pos and Neg ? it has two ends - one on each side to connect the wire to - but no markings as to which is Pos or Neg.

how can i know ? i am going to call them later on - just wondering if anyone else ran into this and if there is a way to know - maybe i am missing something

i even asked them before i ordered it - they told me you will see it when you get it - well i got it - and i dont see anything to give me any sure indication of which side is which

Diversion Dump Load Resistors | Missouri Wind and Solar

Protect your wind turbine with a dump load. Choose from high quality individual resistors or pre-wired resistor banks to keep your wind turbine under a load.

windandsolar.com

600 watt version 24V is what i got - anyone have an idea which side is which ? thanks

 

[Leeds]

It's just a resistor, there is no positive or negative. Hook it up any direction you like.

 

[ape]

Same question. I have it like this now and it keeps destroying my batteries and going to 18 volt in summer in full sun.
I use 350w solar panel, 40a 12/24v charger controller, dump load 300w.