Trying to wire in LED to show cooker element is on/off
I doubt very much that an LED is appropriate in this case. All wiring except the temperature sensor is AC line wiring. In particular,06 connects to L1, the active AC line. Anything you connect to this will operate from 230 VAC. In this case, 07 is in series with the heating elements -81 and -82, so placing an LED across these contacts will result in 230 VAC appearing across the LED when the heater is not active. 

While it's true you can do this, keep 3 things in mind.

1) You must provide current limiting to the LED, and this will dissipate much more power than the LED.

2) You must provide a diode to protect the LED from the reverse voltage (about 320 volts maximum) which will appear 50 times per second.

3) Because you will have connected directly to line, unless you know very clearly what you are doing, you stand a distinct  chance that your modification will cause the cooker to become live, and for your body (or that of someone you know) to complete the circuit. This is called "auto-Darwination" and it is not a good thing.