I have Hella 550s mounted to the top of the fiberglass bumper, and they
don't get misaligned... except when they have an encounter with my
four-year-old, then they end facing each other.

H�ctor

> Want to mount two large round fog lamps on top of the fiberglass/plastic
bumper of my '90 Carat. If I were using the lamps strictlyas fog lamps, I
would mount a pair of rectangular ones under the bumper but I use them
mainly for lighting up the road just ahead of the van especially on dark
rainy nights. I also have two that are too large for mounting under the
bumper.
>
> They seem to fit perfectly on each side of the grill. If I mount them
directly on the fiberglass/plastic surface, it seems that they would vibrate
since this (non-metal) fiberglass/plastic  bumper isn't exactly rigid.
Mounting directly to the metal bumper frame seems ideal, but it's an inch or
two below the fiberglass/plastic top and the lamp's mounting bolt doesn't
even touch the metal bumper frame.
>
> Any easy solution short of fabricating a metal spacer of some sort to fit
between the fiberglass/plastic top and the metal bumper frame?
>
> thanks
>
> Greg