Medium duty conventional truck. Key start. 9-pin diagnostic port.
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Which wires give constant, ignition and ground on a 2007 International 4300 and 4400?
On a 2007 International 4300 and 4400, take ignition from the Pink wire at the cab fuse block (inside the cab), ignition relay output, circuit A13AH, and ground to clean, bare body metal. Meter every wire first.
Written by API Signal, fleet GPS and camera installers for 35+ years across Georgia, South Carolina and North Carolina, installing every major telematics and camera brand. Every wire on this page lists its source.
Test every wire with a meter before you tap it
No wiring information is ever guaranteed. Colors and locations change with trim, options and build date, and the manufacturer can change them in the middle of a model year. We share this as a starting point for installers, and you are responsible for confirming every connection on the truck in front of you.
This page covers the 2007 International 4300 and 4400, the last model year with the Electrical System Controller.
Navistar tells installers not to take power at the key switch on this truck. It gives relay output circuits in the cab fuse block for ignition and accessory, and those are the wires on this page. Navistar identifies wires by circuit number, and the colors here come from its color chart for each circuit number. Lamp wires are at the body builder connector. Our own team has not yet metered these on a 2007 truck.
9-pin diagnostic portLocation not confirmed
Best power spotInside cab fuse block, relay outputs
System voltage12V
Ignition typeKey
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Where do I get constant, ignition and ground on a 2007 International 4300 and 4400?
Navistar gives ignition, accessory and ground at the cab fuse block and the dash panel. Constant power comes from the Mega-fuse.
Option 1 Ignition, accessory, ground
Inside cab fuse block
The relay outputs Navistar names for added equipment.
Constant
Not found
Not found at this spotNavistar gives no battery tap at the cab fuse block. Use option 2.
Ignition
Pink
Cab fuse block (inside the cab), ignition relay output, circuit A13AHNavistar's tap point for key-on power. The same book also gives circuit J13CW at the ignition relay in the power distribution center under the hood.
Accessory
Light Blue
Cab fuse block (inside the cab), accessory relay output, circuit A12BNavistar's tap point for accessory power.
Ground
Ground stud
Ground studs on the dash panelNavistar says to ground added equipment to the chassis or to these studs, never to the batteries. Ground wires on this truck are white.
Tap points from Navistar's body builder electrical book S08300 (2005). Colors from Navistar's circuit color chart: circuit 13 is the pink ignition feed, circuit 12 is the light blue accessory feed and ground circuits are white. The book gives the circuit number at each tap, so go by the circuit number and meter it. Navistar says not to connect to the key switch itself.
Option 2 Constant
Battery feed
Navistar's battery connection for added loads.
Constant
Fuse stud, color not published
Mega-fuse, unfused side, through an inline Maxi fuse holder. Or any unused Maxi-fuse position in the power distribution center under the hoodNavistar's battery feed for added equipment. No more than 45 added amps and no more than 3 ring terminals on the stud. Battery feed wires on this truck are red.
From Navistar's body builder electrical book S08300 (2005). Fuse the new wire as close to this point as you can.
This truck is multiplexed. Navistar identifies every wire by circuit number, and the colors here come from its color chart for each circuit number.
What are the turn signal, reverse and light wires on a 2007 International 4300 and 4400?
Circuit
Wire color
Location and what it does
Left turnPositive +Not yet checked
Yellow (body builder connection)
Orange (truck harness)
Body builder connector 4450, cavity B, circuit 56 (combined stop and turn). On connector 4460, cavity A is the left turn signal alone8 amps maximum. Navistar says not to tap the turn signal switch.
Right turnPositive +Not yet checked
Light Green (body builder connection)
Orange (truck harness)
Body builder connector 4450, cavity C, circuit 57 (combined stop and turn). On connector 4460, cavity B is the right turn signal alone8 amps maximum.
Park lightPositive +Not yet checked
Brown
Body builder connector 4450, cavity A, circuit 68 (tail lights). Cavity D, circuit 58, is the clearance and marker lightsBoth are brown. 20 amps maximum on each.
HeadlightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
ReversePositive +Not yet checked
Light Blue (body builder connection)
Orange (truck harness)
Body builder connector 4450, cavity E, circuit 71Backup lights. 6 amps maximum.
Dome lightNot foundNot yet checked
Not found
ESC connector 1601, pin C. Pin onlyNavistar gives the output pin but no wire color. It says not to connect into any door switch circuit.
Each chip shows the main insulation color with its stripe. Source: Navistar's body builder electrical book S08300 (2005) (connector cavities) and Navistar's circuit color chart (colors). The location of connector 4450 depends on the body builder wiring option: back of cab or end of frame.
Where are the brake, door, speed and CAN wires on a 2007 International 4300 and 4400?
Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Red (body builder connection)
Orange (truck harness)
Stop light circuit 70. On Body builder connector 4450, cavities B and C carry stop combined with the turn signalsColors from the chart for circuit 70. No separate stop light pin was found. Navistar says not to tap the stop light switch at the brake pedal.
DoorsNot foundNot yet checked
Not found
Not foundNavistar says not to connect into any door switch circuit.
Parking brakeNegative -Not yet checked
Not found
ESC connector 1600, pin 4. Pin onlyPark brake signal, ground when active. No wire color is printed.
HazardNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Vehicle speedPolarity: meter itNot yet checked
Not found
Engine ECM connector 6007, pin 58. Pin onlyNavistar gives this pin for the inline six engine without option 12VVW. Do not tap the speed sensor itself.
J1939 dataDataNot yet checked
Yellow (+)
Green (-)
Power train data link, at the 9-pin diagnostic connectorColors from the chart for circuit 5. The J1708 pair is Dark Blue (+) and Gray (-). The 9-pin cavities were not found. Navistar says never to splice plain wire into the data link.
Sources: Navistar's body builder electrical book S08300 (2005) and Navistar's circuit color chart from the Navistar circuit diagram manuals. Navistar lists this truck with both a black 250K and a green 500K 9-pin connector and does not say which year changed. Door, hazard and headlight wires, the 9-pin cavities and the port location were not found.
Which years share wiring with the 2007 International 4300 and 4400?
This page20074300 and 4400.
Same wiring2005, 2006Trucks with the Electrical System Controller (ESC). Navistar's 2005 book and its circuit manuals for builds from March 2004 to February 2007 cover them.
Not this page2008 and newerTrucks built from about March 2007 have the new Body Controller and a different ignition circuit number. A late built 2007 truck can be the new system: the Body Controller sits behind a kick plate by the driver's left foot. No source was opened for 2004 and older.
Where are the fuse boxes and ground points on a 2007 International 4300 and 4400?
InteriorInside cab fuse blockHolds the ignition and accessory relays. Navistar describes a lamp connector as behind the instrument panel, left of the interior fuse panel. The exact panel position was not found.
Under the hoodPower distribution centerHolds the Maxi-fuse positions and an ignition relay. Navistar puts ground stud 4005 near it.
Ground pointsGround studs on the dash panelOr the chassis. Never the batteries.
From Navistar's body builder electrical books. No fuse chart was found, so no fuse tap position is given. Navistar's method is the relay output circuits, not a fuse tap.
Where is the 9-pin diagnostic port on a 2007 International 4300 and 4400?
9-PIN
Diagnostic port9-pin diagnostic port: location not confirmedLook under the driver side dash first, and send us a photo if you find it.
Common questions about 2007 International 4300 and 4400 wiring
What wire is ignition on a 2007 International 4300 and 4400?
Pink at the cab fuse block (inside the cab), ignition relay output, circuit A13AH. Navistar's tap point for key-on power. Meter it before you tap it.
Where is the reverse wire on a 2007 International 4300 and 4400?
Light Blue (body builder connection) and Orange (truck harness) (positive +) at the body builder connector 4450, cavity E, circuit 71. Backup lights. Meter it before you tap it.
Where is the brake wire on a 2007 International 4300 and 4400?
Red (body builder connection) and Orange (truck harness) (positive +) at the stop light circuit 70. On Body builder connector 4450, cavities B and C carry stop combined with the turn signals. Colors from the chart for circuit 70. Meter it before you tap it.
Where is the parking brake wire on a 2007 International 4300 and 4400?
The wire color is not published. It is at the ESC connector 1600, pin 4. Pin only. Park brake signal, ground when active. Meter it before you tap it.
Where is the vehicle speed signal on a 2007 International 4300 and 4400?
The wire color is not published. It is at the engine ECM connector 6007, pin 58. Pin only. Navistar gives this pin for the inline six engine without option 12VVW. Meter it before you tap it.
Which years share wiring with the 2007 International 4300 and 4400?
2005, 2006. Trucks with the Electrical System Controller (ESC).
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