Some 19 set (and other wireless sets) manuals are free to download from the VMARS group. Document 800 gives a basic view of the set.
http://www.vmarsmanuals.co.uk/archive/files_index.htm
The thing to remember is the 19 set is not just a radio but a system with many components. The set was issued as a basic setup with some ancillaries but the end user had to order the mounting kit separately for which ever vehicle it was destined for. These kits contained unique hardware, control boxes, cables, etc.
Sets mounted in CMPs were often fitted with the ground mount (big wooden board) so it could be relocated away from the truck.