I do understand about the red wire carrying a voltage to the lcd screen and making a connection with the blue when switched on. My issue at the moment is that the whole cable is removed from the bike and is sitting on me desk with no battery and no lcd screen attached yet the red and blue are showing they are connected ( no resistance ). This is why I thought the cable may be at fault. By the way battery terminal are just blades and look to be in good order.
Cheers for your input.
Can you please explain which measurement you did that brought you to the conclusion that they're connected?
Even if they were connected by a dead short, it would make no difference to the function of the bike, since they must be 100% connected during operation. The only effect would be that your battery would run down very slowly when switched off.
A short between the red or blue and any of the other wires would be serious or fatal for the electrical system, but not between red and blue.
As I said before, you can test the bike without the cable and without the LCD by shorting the red and blue wires on the controller. That would eliminate any problem in the LCD or cable.