I added a new vehicle, a 1951 Ford Highway Patrol Car.
I installed my standard headlights and taillights. Two 1 mm 1½ volt lights for the headlights and one for the fiber driver to the taillights.
I drilled out the red beacon on the roof with a 1 mm bit and added another 1 mm light then dyed it red.
I added a third .03" brass rod for power and ran a separate wire back to my control panel to a LM555 timer chip and the lamp flashes 10% on 90% off closely resembling a revolving beacon of the era.
If you look closely you can see the stretched coiled microphone cord from his radio in the top and bottom pictures.