EM56 Ford Interface unit

EM56 Ford Interface unit









Overview

The EM56 has been designed to interface between the habitation electrical system and the Ford cab as used in the Auto-Trail F-Line and Excel ranges of motorhomes, fitted with a non-Ford head unit and Sargent rear view camera.
It provides access to cab signals such as engine run and door lock/unlock, provides fused outputs for fridge operation, split charging, & towing.  It also has built in control for an electric step providing both automatic and manual operation combined with awning light control from the door lock and unlock signals.

The EM56 is fitted with an EM2 camera interface which is used to connect the reverse camera to the head unit monitor Auto-Trail use.  For details of the EM2 please see the following article:  EM2 - Camera Interface

Fuse Allocation and Switch settings

FUSE      RATING        USAGE
Fuse 1      15A            Electric Step
Fuse 2      2A                Electronics
Fuse 3      5A                Awning Light
Fuse 4      10A             Enroute USB
Fuse 5      15A             Towing D+
Fuse 6      15A             Towing Permanent
Fuse 7      20A             D+ Fridge Element
Fuse 8      20A              Vehicle Battery

Use only good quality fuses and DO NOT replace any fuse with one of a higher value than stated in the list above.

SWITCH      USAGE
Switch 1      Step time - UP = short time, DOWN = long time (UP)
Switch 2      Door Lock step automation - UP = on  (DOWN)
Switch 3      Door Unlock step automation - UP = on (UP)
Switch 4      Awning light with Lock/Unlock = UP = on (UP)

The standard settings, as requested by Auto-trail are given in brackets.

Connectivity

CONNECTOR /PIN FUNCTION COLOUR / CABLE COLOUR
FC1 Fridge BLACK MOULDING
1 Fridge D+ Red/Yellow
2 Low D+ Orange/Yellow
3 Fridge Ground White/Black
FC2 Vehicle battery out BLACK MOULDING
1 Battery Ground White/Orange
2 Battery + Brown/Green
FC3 VLM7 Supply WHITE MOULDING
1 Tow + Yellow
2 Tow D+ Red
FC4 User circuits WHITE MOULDING
1 Enroute USB Yellow/Blue
2 12V Sockets (input) Yellow/white
3 Awning Light Grey/Red
4 Low D+ Orange/Yellow
5 Step operate switch (input) Blue/Red
6 Step Motor Red/White
7 Low D+ Orange/Yellow
8 Step limit switch(input) Blue/White
9 Step Motor Red/Blue
FC5 User circuits WHITE MOULDING
1 Lock Green
2 Not used
3 Perm 12V (in) Brown/Yellow
4 Unlock +ve White
5 Ignition Blue
6 Hi lev Brake light White/Blue
FC6 Signal Inputs WHITE MOULDING
1 Lock Green
2 Engine Run Brown/White
3 Not used
4 Unlock +ve White
5 Ignition Blue
6 Hi lev Brake light White/Blue
FC7 Vehicle battery in
 BLACK MOULDING
1 Battery Ground Black
3 Battery + Red
FC8
1 Radio Feed out Brown/Yellow
BZR
1 Future Use
2 Future Use
FC10 EM2
1 Low D+ Orange/Yellow
2 12V Ground White/Orange
3 NOT USED

    • Related Articles

    • EM55 Ford Interface unit

      Overview The EM55 has been designed to interface between the habitation electrical system and the Ford cab as used in the Auto-Trail Tribute range of motorhomes. It provides access to cab signals such as engine run and door lock/unlock, provides ...
    • EM40 Fiat Interface Unit

      Overview The EM40 is an interface between the Fiat base vehicle and the habitation electrics, and is used in conjunction with an EC500 or EC700 power supply system. The unit provides fused outputs for a the 12V fridge, vehicle battery supply and tow ...
    • EM45 Mercedes Interface Unit

      Overview The EM45 is an interface between the Mercedes base vehicle and the habitation electrics, and is used in conjunction with an EC500 or EC700 power supply system. The unit provides fused outputs for a the 12V fridge, vehicle battery supply and ...
    • EM50 Fiat Interface Unit

      Overview The EM50 was developed to interface between the habitation electrical system and the (then new) Fiat X250 Cab as introduced in 2007; 3 versions were created, A,B, & C.  The A version was used on all Auto-Trail Apache/Tracker, Cheyenne, & ...
    • Ford Monza - Control Panel

      Overview The Ford Monza control panel provides switching control for vehicle systems such as water pump, lighting and battery select. It also provides monitoring of the battery voltage. Features Switches for 12V Power, Lighting & Water Pumps Battery ...