Compressor pressure switch problems

[examorph]

A pressure switch will connect to the starter relay/circuit and will have an air pressure input/connection.

https://www.machinemart.co.uk/p/pres...FUeeGwodY94JMw

20 Amp unit should do if what you have runs on a 13A plug.

- Nick

Thanks Nick. So to confirm, I would just connect the current mains plug wires to the "motor terminal" end of the switch (as these go to the starter relay) and wire a mains supply to the other end and supply air pressure to it?
Yes its a standard 13A plug, would the cheaper unit rated at 15A (http://www.ebay.co.uk/itm/New-Single...kAAOSwLqFV9dJb) still be suitable? Thanks.