Help with bms circuit

[madmax]

I am playing around with these hoverboard ebike modules. I can't seem to figure out what these two wires are. These are from swagtron 36v fire resistant packs. They're in a 2p10s configuration. These pics are from their filings, but match what I have. Any ideas? The circuit board shows the marking of C and a D

 

[BiduleOhm]

Pretty much impossible to say without better pictures. A first guess would be for some communication but the placement would be weird for that (far from the MCU).

 

[madmax]

Does this help? Top left corner.

 

[BiduleOhm]

Not really, we need higher resolution and non-blurry images to be able to see where the traces go.

But if you have the module near by and a multimeter the simplest would be to use the continuity test and your eyes to see where the traces go.