I know Revell-Germany has/had more than one Fire-engine kit out.
I think the target audience for kits like is too limited to support large or wide releases of many Kits.
Also take into account that the Fire-engines vary between countries and even towns, thus their appeal is most likely limited to the locality where they are used.
Thus the european Fire-engines released by Revell-Germany might not appeal to US audiences. Even though it was fun adding the lights and supplied sound-system in.
http://www.ehobbies.com/mo-rvl-07504.html
http://www.ehobbies.com/mo-rvl-07531.html
I think there were more than the 2 listed above, the Unimog Kit was also supplied with the light/sound kit, build that kit MANY MANY years ago. At that time Revell re-issued a LOT of Kits with lights and sounds Police Cars, F-15, etc.