how do I reflect a wireframe/halo object on a mirrored surface?
If the object to be reflected is ‘solid’ it works, but if I change the wire/halo settings in the render pipeline tab I see the wired/halo’d object but no reflection.
That’s because halos and wire aren’t raytraced. To work around this you could do non-raytraced reflections using environment maps.
http://www.ru.is/kennarar/hannes/useful/BlenderManual/htmlI/ch11s02.html