drl lights wired to sidelights help

[Niall]

You cant wire then to your sidelights because theyer supposed to turn off when you turn your headlights on and the sidelights dont do that. IIRC youll fail your MOT for that.

Well thats bollocks.
The idea is they are supposed to be switchable from a switch on the dash. Not linked to side lights (defeats the object). When there on, the rear lights are not supposed to be lit as well.
easiest way is to just have them on a separate supply which switches on when you switch the ignition on.