The choke cable ,The moulded part should twist and come out ,the light switch knob may have a small screw underneath (my 1200 does) or it may have small button on the side of the switch itself behind the dash like a Holden and you have to press it and push the switch in then out to release it.

Remember to pull the choke cable out you may have to take the dash facsia (plastic) off to reveal the metal dash housing.

Hope this helps.