Best time to apply a wash?

Hey all:

I'm in the process of repainting my Gauntlet II APCs and I was
wondering,
when would you apply a wash to the vehicle?  I intend on using a coat of
future floor wax to gloss coat it before putting decals on it.	Would
you
put the wash after the decals go on and a second gloss coat added, or at
some point before?

Later,
Mark A. Siefert