Can't find any blown fuses in the box under the hood of 2002 Blazer. Bulbs both check out and the ground is good but no 12 comes when I flick the low beams off.

It WAS banged in the front. I suspect a relay. Can Any body suggest where to look?
Mant thanks ..... k

 

I know there's a relay box under the hood on the passenger side I think, close to the fire wall...

 

Many thanks... T%here are SOME relays in the Fuse box on the driver's side... Many thanks I'll have a look on the other side for the one that controls the Hi Beams...

... k