How to reassambel a Vauxhall Ignition switch?

How do you reassemble a Vauxhall Corsa B 1994 Ignition switch original GM part? I split it open and now I am having difficulties putting it back together. The accessories like CD/Radio will not turn on any more only the engine starting function works. I think I am putting it in the wrong order,
its the long black switch with the connectors covered by plastic sides. Stupid Haynes manual does not cover it.

Any help thanks.