Hello All,
I just found a new photograph that actually shows the rear view of the breakdown cranes 
Do they look more like the M.E Breakdown crane pictured in my last message?
What are the two horizontal boards just below the towing hitch?
Would the lights be converted headlights or were they proper flood/spot/work lamps?
Accessed November 23, 2016 from, 
https://www.awm.gov.au/collection/000365 
ID number	000365
Collection type	Photograph
Object type	Black & white
Maker	Parer, Damien Peter
Place made	Australia: Victoria, Melbourne, Broadmeadows, Broadmeadows Camp
Date made	c December 1939
Physical description	Black & white
Description	BROADMEADOWS - BREAKDOWN CARS OF MOTOR TRANSPORT. ARMY. TRAINING IN AUST. MOTOR TRANSPORT. (NEGATIVE BY D.P.).
Kind Regards
Lionel