SKY answer.....Not LPG off thread waffle

The new Sky cables are twin pattern and not singles as were the older ones. When Engineers install Sky they will only connect the cables to the dish that are required for that installation. i.e. if you have basic (not +) Sky then it is likely they will have only connected one of the pair to the LNB on the dish (they do it to stop the owner from doing an easy upgrade), if you had Sky+ then they would have connected both. To receive both signals used by the Sky+ box both must be connected to the dish and box. Either one will work at the box end for basic Sky as long as they are connected to the dish. Just try them both to see which gives the signal.
As said before the box and card have to be paired by telephoning Sky Customer Services before they will work together. They ask for the details of the box and card and will not pair them if they are reported as being 'dodgy'. I know of a few who have had police visits after buying car boot ones!
Basc question answer is that yes, the Sky+ box will work and simply accept Sky basic but with the present low offers why not upgrade it to Sky+ yourself and receive the benefits of a new box and frozen fees for 12 months and free installation?
That would be the thing to do .............