You should try to get everything period-correct.
Lights, gear, equipment. Not that hard to do. Just
take your time and you will have a NICE vintage
piece of apparatus that you will be proud of.
Here is my Willys Jeep utility.
And mine was as bad as you could get!
When I started, it was a derelict. It was
in the woods with a TREE GROWING THROUGH IT!
All original 1957 Willys Jeep stuff! Period-correct
lighting for a utility/brush based on both my own
experience (1966-present involvement in FDs)
and research of pictures, specs and standards
for such vehicles.
I don't know of any Jeep Wagon buggies in PG
from back in the day, but there WERE several
Jeep CJs in service until recently. Try looking
on several other
FD websites such as Loudon
County VA, Fairfax County VA and others.