wireharnesses

NOW IF YOU HAD THE 77 1/2 TO 79 YEARS YOU WOULD SEE PLUG INS LIKE THIS PICTURES BELOW. WHAT YOU WILL SEE IS THAT FORD WENT TO A RECTANGULAR TYPE PLUG AND THEY INCLUDED THE BRAKE SWITCH WIRES IN THIS TIME. NOTICE IN THE TOP PICTURE THE BRAKE WARNING WIRE HARNESS IS SEPARATE.

NOW WE MOVE TO THE MAIN CAB HARNESS WHICH IS THE MOST IMPORTANT HARNESS BECAUSE ALL THE OTHER HARNESSES CONNECT TO THIS ONE IN THE CAB. LET START WITH DASH INSTRUMENTS FORD HAD TWO SETUPS IN THIS AREA YOU HAVE ONE OF THE TWO INSTRUMENT CLUSTERS, ONE WITH FULL GAUGES OR THE OTHER ONE WHICH HAD A GAS GAUGE AND A TEMP GAUGE AND A WARNING LIGHT FOR THE ALTERNATOR AND ENGINE OIL. NOW AGAIN YOU NEED TO LOOK AT WHAT YOU HAVE BECAUSE FORD PULLED A FAST ONE AGAIN. THERE WERE ABOUT FOUR DIFFERENT STYLES OF PLUG INS FOR THE INSTRUMENT CLUSTER ASSY. BELOW ARE SOME PICTURES OF WHAT I AM TALKING ABOUT HERE.

NOW THE PLUG ON THE RIGHT PICTURE GOES TO THE EARLY 73-75 INSTRUMENT CLUSTER WITH FULL GAUGES. FORD ALSO HAD A SHORT PLUG LIKE IN PICTURE ONE ABOVE BUT I DON'T HAVE ONE IN STOCK TO TAKE A PICTURE OF, IT WAS FOR THE PARTIAL GAUGE CLUSTER.

NOW WE GET TO THE IGNITION KEY SWITCHS, FORD HAD THREE DIFFERENT STYLES FROM 1973-79
BELOW ARE PICTURES OF ALL THREE TYPES FORD USED.

THIS IS THE STYLE FORD USED IN LATE 77-79

THIS WAS THE STYLE SWITCH AND PLUG USED FROM 73-77

THE FAR LEFT PLUG GOES TO THE IGNITION BOX

THE NEXT PLUG GOES TO THE ENGINE HARNESS PLUGIN

THE MIDDLE PLUG GOES TO THE TAILLIGHT HARNESS

AND LAST BUT NOT LEAST THE NEXT SMALL GREEN PLUG GOES TO THE SIDE MARKER LIGHT AND THE PARK LIGHTS.

AND THE LAST PLUG TO THE RIGHT NOT SURE ON THAT ONE.

FROM THE TOP GOING TO THE RIGHT
1 HOLE= NOTHING
2 HOLE= RED WITH BLACK STRIPE WIRE
3 HOLE= SOLID BLUE WIRE
4 HOLE= SOLID DARK GREEN WIRE
5 HOLE= YELLOW WITH BLACK STRIPE WIRE
6 HOLE= SOLID WHITE WIRE
7 HOLE= NOTHING
                                            BOTTOM ROW LEFT TO RIGHT
                                             8 HOLE= LIGHT GREEN WITH YELLOW STRIPE WIRE
                                             9 HOLE= WHITE WIRE WITH BLUE STRIPE WIRE
                                           10 HOLE= DARK BLUE WITH WHITE STRIPE WIRE
                                           11 HOLE= NOTHING

THE ABOVE IS THE WIRE PLUG CODE FOR THE 73-77 TURN SIGNAL SWITCH WHICH DOES NOT COME WITH A NEW PLUG FROM FORD, SO YOU HAVE TO REMOVE THE OLD PLUG AND INSERT THE NEW WIRES INTO THE OLD PLUG ABOVE IS THE PICTURE AND BREAK DOWN OF HOW THE WIRES GO IN.