Fog lights installation

[baliboy.schroeder]

Hi All,

I was given two old style fog lights to put on my van. these will be bolted to the front bumper.

I was surprised that they only had one wire coming from each unit. I was expecting two ?

If this is right...now how do I join them to one power lead and what about the grounding ?
I suppose I need a relay... one for each lamp ??  A separate switch will be located under the dash

Any advise or sketch of how to wire these lamps would be appreciated 

Regards 
Klaus