Re: 1954 Mercury heater diagrams, blowups, instructions etc.

[Virgil & Sue Klein]

Don’t know if this will help, but essentially ’52-’56 (except ’56 is 12 volt) are identical heating systems.  The location of the control levers in the dash assembly are slightly different but the balance of the system is the same.  I have done several of these systems so if you want to email me separately I will see if I can be of help.  Email is virgil53@windstream.net