One of the most important things to know when changing over any handle circuit or golf trolley controller is they must be compatible with each other. This should be the first thing to check when replacing any of these components. If in doubt contact me and I can confirm. The online store has the controllers for sale and with each one is the option to purchase the correct handle circuit. if this is done improperly then the golf trolley will not function or even power up.
A list below will show the components which should be aligned together.
Main Controller Box and Handle Circuits must be Compatible
S1G-12V-8-J-9 must have the square circuit
SIG-T2D3-J-12 must have the circuit D64186
S3D-G-USB-12V-22A must have the circuit D-62145 or D-61337
Let me know if you need any other help or if I have got anything wrong.