hello my niece has a 06 hhr it was not equiped with driving lights we got a set for it.Upon checking the under hood fuse pannel we found allready installed a relay and 15 amp fuse.Also behind the pannel where the radio and sutt are we found a wire harness with 3 wires in it is this ther wire harness for the lights?the wire inside were orange white and black.please help us out

 

There is a how to do it yourself install for factory fog light install. It uses factory parts but there are pictures and directions so it may help you out.
https://www.chevyhhr.net/forums/how-tutorial-library-21/do-yourself-factory-fogs-637/

 

it sauys some thing about a bcm?what is that and will we have to get it reprogramed?

 

I have not done anything to need it reprogrammed, but I think it would just have to be done if you were going with a factory set up. I am sure someone here can tell you for sure.