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Which wires give constant, ignition and ground on a 2020 Ford Expedition?
On a 2020 Ford Expedition, take constant power from the Green/Red wire at the gateway plug on the back of the OBD port, black 24-pin (C2431), pin 24, and ground to the Black/Purple wire at the gateway plug, black 24-pin (C2431), pin 14. 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 2020 Ford Expedition, including the long-wheelbase Expedition MAX and the SSV special service truck.
This truck came with a key or push-button start. The OBD port sits on a gateway module, and the only wire sources for these years cover the gateway plug, so most circuits show Not found. Our own team has not yet metered these on a 2020 truck.
OBD-II portDriver side of the dash
Best power spotGateway plug behind the OBD port
System voltage12V
Ignition typeKey or push-button
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Where do I get constant, ignition and ground on a 2020 Ford Expedition?
Take constant, ignition and ground from the same area.
Option 1 Constant and ground
Gateway plug behind the OBD port
Driver side of the dash. The OBD port sits on a gateway module with a 24-pin plug on its back.
Constant
Green/Red
Gateway plug on the back of the OBD port, black 24-pin (C2431), pin 24Always hot. iDatalink and Fortin agree.
Ignition
Not found
Not foundNo source gave an ignition wire for 2018 to 2021. Use the fuse tap option.
Ground
Black/Purple
Gateway plug, black 24-pin (C2431), pin 14Ground at the same plug.
No ignition, accessory or starter wire color was found for these years. Key and push-button trucks use the same gateway plug.
Option 2 Ignition
Fuse tap
For switched power.
Ignition
Fuse tap
Interior fuse panel, passenger footwell, fuse 37 (heated steering wheel)Several owners report this slot switches with the ignition. The body module limits its current, so use it for a camera or tracker only.
Ground
Body ground
Large ground terminal on the passenger A-pillar, by the fuse panelReported by one 2019 owner. Otherwise use clean body metal.
The fuse panel was renumbered for 2020, but fuse 37 is the heated steering wheel on every year. Owners warn a poor fuse tap here can stop the heated wheel working.
Gateway plug colors from the iDatalink install guide for 2018 to 2021.
What are the turn signal, reverse and light wires on a 2020 Ford Expedition?
Circuit
Wire color
Location and what it does
Left turnNot foundNot yet checked
Not found
Not foundNo source for these years. The older colors are not shown because the wiring changed.
Right turnNot foundNot yet checked
Not found
Not foundNo source for these years. The older colors are not shown because the wiring changed.
Park lightNegative -Not yet checked
Gray
Black/Blue
Headlight switch plug (C205), black 16-pin, pins 11 and 4Switch inputs to the body module, not lamp power. iDatalink and Fortin agree on the colors; Fortin calls the plug 14-pin.
HeadlightNot foundNot yet checked
Not found
Not foundNo source for these years. The older colors are not shown because the wiring changed.
ReverseNot foundNot yet checked
Not found
Not foundNo source for these years. The older colors are not shown because the wiring changed.
Dome lightNot foundNot yet checked
Not found
Not foundNo source for these years. The older colors are not shown because the wiring changed.
Each chip shows the main insulation color with its stripe. Source: the iDatalink install guide for 2018 to 2021.
Where are the brake, door, speed and CAN wires on a 2020 Ford Expedition?
Circuit
Wire color
Location and what it does
BrakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
DoorsNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Parking brakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
HazardNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
SeatbeltNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Vehicle speedNot foundNot yet checked
Not found
Not foundFord's Expedition SSV guides do not give a speed output. Use the CAN bus for speed.
TachNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
CAN busDataNot yet checked
White/Blue (high)
White (low)
Gateway plug on the back of the OBD port, black 24-pin (C2431), pins 20 and 19High speed CAN. The medium speed pair is Gray/Orange and Purple/Orange on pins 23 and 22. Never cut or splice them.
Sources: the iDatalink install guide for 2018 to 2021, Fortin and Omega guides for 2018 to 2020 and owner posts on an Expedition forum. Ford's special service vehicle guides give no wire colors. Most circuits were not found.
Which years share wiring with the 2020 Ford Expedition?
This page2020iDatalink, Fortin and Omega cover this year.
Same wiring2018, 2019 and 2021iDatalink lists 2018 to 2021 as one install for key and push-button trucks. Fortin and Omega agree for 2018 to 2020. The fuse panel was renumbered for 2020.
Not this page2022 and newerThe data and power taps moved behind the glove box. 2015 to 2017 are a different truck with no usable colors yet.
Where are the fuse boxes and ground points on a 2020 Ford Expedition?
InteriorPassenger footwell, by the doorBehind a trim panel. Fuse 37 (heated steering wheel) is switched. The factory telematics modem is on fuse 19 (5A).
Under the hoodPower distribution boxIn the engine bay. The power point fuses are here.
Ground pointsGateway plug, pin 14Black/Purple at the plug behind the OBD port. One owner also reports a large ground terminal on the passenger A-pillar.
Fuse list from a fuse guide for 2018 to 2021; the panel was renumbered for 2020. Check the lid label before you use a slot.
Where is the OBD-II port on a 2020 Ford Expedition?
OBD II
Diagnostic portOBD-II port: driver side of the dashPlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Common questions about 2020 Ford Expedition wiring
What wire is constant power on a 2020 Ford Expedition?
Green/Red at the gateway plug on the back of the OBD port, black 24-pin (C2431), pin 24. Always hot. Meter it before you tap it.
Where is the CAN bus on a 2020 Ford Expedition?
White/Blue (high) and White (low) at the gateway plug on the back of the OBD port, black 24-pin (C2431), pins 20 and 19. High speed CAN.
Which years share wiring with the 2020 Ford Expedition?
2018, 2019 and 2021. iDatalink lists 2018 to 2021 as one install for key and push-button trucks.
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No one has sent photos for the 2020 Ford Expedition yet, so yours could be the first. Every photo, wire color and tip we use goes on this page with your name on it, and it saves the next installer time under the dash.
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