Proper heat bed wiring problem

Hello,
I have been having the problem of my thermistor wires breaking at the heat bed solder points whenever I have a very large(almost the whole bed) prints. I know it's from the wire going back and forth forsuch a large print. I have all the heat bed wires wrapped is plastic spiral wire wrap but I obviously don't know the best configuration for the wires. Any assistance would be great.

Good practise is that wires attached to moving parts should be mechanically supported. So all the wires to the bed should be attached to the bed or carriage. Pclips or tyraps can be used. Often the suppliers don't provide a fixing point (hole) so you have to use your initiative. You also have to remember the hot bed can melt some plastics hence I mention attaching to the carriage.
You should do the same for the X carriage.

thanks that makes complete sense. I was just blinded by the excitement of using something new.