The "little white box" is a switched fused spur.
Get a lecky to look at it. Any decent house-basher should be able to sort it.
Have a look in the Yellow Pages for a Nic-Eic (Nice-Eck) registered electrician. It stands for National Inspection Council - Electrical Installation Council. This will ensure that you are not hiring a cowboy with a terminal driver and a pair of wire-cutters.
I hope this helps.

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Connect it: Red > Yellow, Yellow > Blue, & Blew to ....'kin bits!
Any ramblings, meanderings, thoughts or musings are mine and mine alone. Any opinions expressed are Lettie's!