@tjc2005 Hi Tom,
I joined the forum today and saw your message. As your last reply was on the 7th of may I am not sure if you've soved it or not.
One thing I can say based of your photo is that your wiring is not correct. So what do I mean;
i. Wiring to the E0stop = correct
ii. red wire goed to the pin in the middle
iii. white wire goes to the pin closest to the wifi module
The wires to the probe on our printer is flipped and not connected as you would expect based on the colours. I actually took of the tape to check what cable is going where.
I hope this helps you foward.
Cheers,
Igor