Easy to assemble and install kit will fit in just about any HO or N scale box car and produces a realistic 1 per second flash.
 
REQUIRES WIRE SIZING AND CUTTING, SOLDERING, CUSTOM FITTING. 
 
The board is powered by a common watch cell battery and the kit includes a tiny On/Off switch to save power.
All components are small enough to easily fit in a standard HO or N scale box car and with some imagination, could be installed in hoppers or other kinds of cars. The board itself is only ½” x ½” in size. The battery holder is 1” x ½”.
 
Note: This MAY fit in some Z scale cabooses, but I can'y guarantee it.
 
Uses Red PICO (0603) LED