Roy
Right if you can wire mains in to the top of the contactor
Neutral to A
Live to C
Motor neutral to E
Motor live to G
Then the wires from the switch should be a 3 wire set
One is connected to both buttons I’ve called this 2. This needs to connect to C as well as the live wire
One is connected to the stop button which i’ve Called 3 it may go via the microswitches if this are still present this needs to connect to D
The other wire called 1 comes from the start button and this needs to go to H which I think goes to the solonoid wire but this is what i need to talk you through as i cant see on the photos clearly enough
Ian