If you are looking to buy Spare Parts, please see the Essentials Page for more up to date supplier links.
Both look like they have the correct plug so you shouldn’t need to do any soldering as long as the wires are long enough .. hopefully!
The JGAurora A5 & A3S Bowden coupler fail very easily. It is very hard to find a replacement, as this particular coupler is very uncommon. The fitting is a 4mm pneumatic coupling, with an M8 screw fitting, but with a 1.0mm fine thread. A 1.25mm thread will not work.
Need spare parts fast? Some members are happy to sell you some of their spares:
Commercial Bowden Coupler Sellers