brake light warning after radio fit
 

Having had Halfords fiddle aboout in the radio slot, my brake lifght warning is on.

I will investigate the lamps but do the cables pass through the area that Halfords were in?

Might be worth checking your fuses in the engine bay. Especially the ones under the coloured protector.

Had one go recently you could barely see with visual inspection, but it was causing all sorts of weird and wonderful problems including no interior light, no flashing on locking/unlocking, check engine light, all completely unrelated problems that started with the electric aerial stopping working.