Driving wiring help please

Hey Fellas and Fella-esses,

this could just be a dumb question so feel free to mock if that is the case, but on these two drivers from KD I can see where to attach the +, but where do I attach the - ?



Appologies if my photo's are not up to standard.


Any of the holes around the edge of the driver are ground.

Negative side is oval spot diametraly from + side. It is sticking to the 7315 chip marked Q1.

This is where you connect the LED wires:

As for the battery: + attaches to the inner circle on the back, - attaches to the outer ring surrounding it.