thickness of the wires in CB77?

[terecha]

hi!

I want to order new wires for my CB77 from a webshop, without seeing.
I don't know what is the thickness of the wires in CB77, I suppose it's 0,75mm2 or 1,5mm2.
Please help me.

[terecha]

Yes they are 1,5 mm2, but I purchased speaker cables, would be good for bike wiring? Any differences?