Hi, Richard, thank you for this information.
I think I‘ll feed the maplight in the easy way by the green wire.
Greets René
Why don't you use the connectors Morgan intended for the optional map light, as already suggested? They are coloured brown/green and black, 200mm from the power socket that feeds them. There should also a red/orange cable near the power socket which I believe is live with sidelights on (probably there for illuminated power socket). This may be another option if you are worried about leaving map light on accidentally.