The cold weather pubs are as described in previous posts..
This manual covers the Articized equipment ,including trailer ,van and ambulance heating systems fo GM
#A24: 180 pages
RTIC-C1
GM CMP Illustrated Instruction,Maintenance and Spare Parts List for Artic Equipment,Includes Body Heaters for 3 Ton and HU Ambulance (1942)
The Ford pubs are also on my web site and include..
The FRAE-01 and the FSCWE-01...
The F being Ford and the AE is artic and the SCWE is special cold weather...
http://www.geocities.com/MotorCity/D...024/index.html