Key-start and push-button trucks. Last year of this generation.
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Which wires give constant, ignition and ground on a 2020 Ford F-150?
On a 2020 Ford F-150, take constant power from the Green/Red wire at the BCM 22-pin plug G, pin 22 and ignition from the White wire at the BCM 22-pin plug A, pin 16, 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 2020 Ford F-150, the last year of this generation before the all-new 2021 truck. The powertrains did not change from 2019. FordPass Connect became standard on every trim this year, and Ford notes the modem is connected and sending vehicle data from the day of purchase, which is worth knowing when a fleet adds its own GPS unit on top.
The wire data is shared with the 2015 to 2019 trucks. iDatalink covers 2020 in the same install and gives the same gateway plug pins, but notes that on 2020 trucks the CAN high wire can be White/Blue or plain Blue. An installer report from a 2020 truck confirms the Green/Brown reverse wire. Our team has not yet metered these on a 2020 truck, and each row says so.
OBD-II portDriver side lower dash
Best power spotDriver dash or BCM
System voltage12V
Ignition typeKey or push-button
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Where do I get constant, ignition and ground on a 2020 Ford F-150?
Take constant, ignition and ground from the same area. Push-button trucks get all three at the body computer. Key-start trucks get all three under the driver side dash, where the gateway plug and the ignition switch sit a few inches apart.
Option 1 Push-button trucks
At the BCM
Body computer, which is also the passenger fuse panel. Right side of the passenger footwell, behind the kick panel trim.
Constant
Green/Red
BCM 22-pin plug G, pin 22Always hot. The main BCM battery feed, on a 50A fuse.
Ignition
White
BCM 22-pin plug A, pin 16Push-button trucks: "Ignition Sense", hot in run. From a 2019 push-button table, not yet confirmed on a 2020.
Ground
Body ground
No ground wire listed at the BCMUse clean body metal in the passenger kick area. Never the battery negative post.
The constant here has the biggest fuse on the truck. On key-start trucks Ford's police guide shows the ignition cavity (pin 16) empty, so key-start trucks use Option 2.
Option 2 Key-start trucks
Under the driver dash
Gateway module on the back of the OBD port, plus the ignition switch on the steering column.
Constant
Green/Red
Gateway module behind the OBD port, black 24-pin plug, pin 24Always hot. Small fused circuit that also feeds the gateway, so keep the load light.
Ignition
White/Orange
Ignition switch, black 7-pin plug, pin 1Hot in run and start. On the steering column, a short reach from the gateway plug.
Ground
Black/Violet
Gateway module, black 24-pin plug, pin 14Module ground, same plug as the constant.
Accessory
Violet/Green
Ignition switch, black 7-pin plug, pin 6Hot in accessory and run
Start
Blue/White
Ignition switch, black 7-pin plug, pin 7Hot only while cranking
Key sense is Blue/Gray on pin 5 of the switch. Pins 2, 3 and 4 were not found in any source we checked.
No engine computer option on this truck. Ford's own upfit guide for this generation says not to connect anything into the PCM or its harness, because it can affect engine and transmission operation. Power pins from installer-reported 2015 and 2019 wire tables and the iDatalink install guide, which covers 2020.
What are the turn signal, reverse and light wires on a 2020 Ford F-150?
Circuit
Wire color
Location and what it does
Left turnPositive +Not yet checked
Blue/Green (front)
Gray/Orange (rear)
BCM, passenger kick panel: 40-pin plug F, pin 39 front; 52-pin plug E, pin 26 rearFlashes with the left signal
Right turnPositive +Not yet checked
Yellow/Violet (front)
Green/Orange (rear)
BCM: 40-pin plug F, pin 38 front; 52-pin plug E, pin 52 rearFlashes with the right signal
Park lightPositive +Not yet checked
Blue/Gray
BCM: 22-pin plug G, pin 3 front; 36-pin plug C, pin 12 rearOn with the park lights. A Gray (-) switch input is also at the headlight switch, pin 11.
HeadlightNegative -Not yet checked
Blue
Headlight switch, left of the steering column, black 16-pin plug, pin 12Headlight switch input to the BCM, not lamp power
ReversePositive +Not yet checked
Green/Brown
BCM 36-pin plug C, pin 11, or at the driver kick panelHot in reverse
Dome lightPositive +Not yet checked
Gray/Violet
BCM 36-pin plug C, pin 13On with the dome light
Each chip shows the main insulation color with its stripe. Source: installer-reported wire tables for 2015 and 2019 F-150s. The reverse wire is also confirmed by an installer report from a 2020 truck.
Where are the brake, door, speed and CAN wires on a 2020 Ford F-150?
Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Violet/White
BCM 22-pin plug A, pin 1, or at the brake pedal switchHot with the pedal pressed. Sense only, no load.
Parking brakeNegative -Not yet checked
White/Violet
BCM 52-pin plug E, pin 47, or at the parking brake switchGrounds with the brake set. Only on trucks with a foot parking brake, so check which one the truck has.
In ParkNegative -Not yet checked
Green
Instrument cluster plug, pin 4 (Park Detect circuit)Grounds in Park. From Ford's 2018 and 2019 police guides for this generation.
Driver doorNegative -Not yet checked
Green/Violet (Ford)
Brown (installer)
BCM 52-pin plug E (Ford calls it C5), pin 33Door open input. Same pin in both sources, different color. Meter it.
Passenger doorNegative -Not yet checked
White
BCM 52-pin plug E, pin 21Door open input
Rear doorsNegative -Not yet checked
Green (left rear)
Yellow (right rear)
BCM 52-pin plug E, pin 46 left, pin 19 rightSuperCrew rear doors. SuperCab half doors not confirmed.
HazardNegative -Not yet checked
Brown
Hazard switch, or BCM black 52-pin plug B, pin 19Hazard switch input
Vehicle speedAC signalNot yet checked
Brown/Green (2.7 and 5.0)
Yellow/Orange (3.3 V6)
PCM, passenger side firewall. Push-button trucks: 90-pin plug, pin 51. Key-start 3.3 V6: 95-pin plug, pin 12From a 2019 installer table, not separately confirmed on a 2020. Not listed for 10-speed key-start trucks. Ford says not to tap the PCM, so use CAN or GPS speed.
CAN busDataNot yet checked
White/Blue or Blue (HS high)
White (HS low)
Gateway module behind the OBD port, black 24-pin plug, pin 20 high, pin 19 lowiDatalink says 2020 trucks can use plain Blue for CAN high, and Orange and Violet for the medium-speed pair (pins 23 and 22). Never cut or splice it.
Sources: the same 2015 and 2019 installer tables, the iDatalink install guide for 2015 to 2020 trucks (CAN bus), and Ford's F-150 police modifier guides for 2018 and 2019 (In Park, driver door). Where Ford and an installer disagree, both are shown.
Which years share wiring with the 2020 Ford F-150?
This page2020, last year of this generationNo powertrain changes from 2019. FordPass Connect is standard on every trim.
Same wiring2015, 2016, 2017, 2018 and 2019The 2018 refresh changed the engines and the under-hood fuse numbers, not the in-cab wires. iDatalink covers 2015 to 2020 as one install, and installer tables from 2015 and 2019 trucks match on every wire here.
Not this page2014 and older, 2021 and newerThe 2014 truck is the older steel body. The 2021 truck is a new generation with a different ignition switch plug.
Where are the fuse boxes and ground points on a 2020 Ford F-150?
InteriorPassenger fuse panelThis is also the BCM, right side of the passenger footwell. Fuse 18 (5A) feeds the ignition switch, fuses 12 (7.5A) and 15 (10A) feed the gateway module, fuse 10 (5A) is the embedded modem, and 34 (30A breaker) is the run/start relay.
Under the hoodPower distribution boxRenumbered for 2018. Power points are fuses 6, 8 and 51 (20A). Run/start fuses are 13, 16, 17 and 18 (10A). Trailer backup lamps are 74 (10A) and trailer park lamps 53 (25A). The front camera is on 15 (7.5A).
Ground pointsNot publishedWe found no Ford list of ground points for this truck. Use clean body or chassis metal, never the battery negative post, and never remove a factory ground.
Fuse numbers come from Ford's 2020 F-150 owner's manual supplement, which matches 2018 and 2019. Our team has not yet checked them on a truck.
Where is the OBD-II port on a 2020 Ford F-150?
OBD II
Diagnostic portOBD-II port: driver side lower dashPlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Common questions about 2020 Ford F-150 wiring
What wire is constant power on a 2020 Ford F-150?
Green/Red at the BCM 22-pin plug G, pin 22. Always hot. Meter it before you tap it.
What wire is ignition on a 2020 Ford F-150?
White at the BCM 22-pin plug A, pin 16. Push-button trucks: "Ignition Sense", hot in run. Meter it before you tap it.
Where is the reverse wire on a 2020 Ford F-150?
Green/Brown (positive +) at the BCM 36-pin plug C, pin 11, or at the driver kick panel. Hot in reverse. Meter it before you tap it.
Where is the brake wire on a 2020 Ford F-150?
Violet/White (positive +) at the BCM 22-pin plug A, pin 1, or at the brake pedal switch. Hot with the pedal pressed. Meter it before you tap it.
Where is the parking brake wire on a 2020 Ford F-150?
White/Violet (negative -) at the BCM 52-pin plug E, pin 47, or at the parking brake switch. Grounds with the brake set. Meter it before you tap it.
Where is the vehicle speed signal on a 2020 Ford F-150?
Brown/Green (2.7 and 5.0) and Yellow/Orange (3.3 V6) at the PCM, passenger side firewall. Push-button trucks: 90-pin plug, pin 51. Key-start 3.3 V6: 95-pin plug, pin 12. From a 2019 installer table, not separately confirmed on a 2020. Meter it before you tap it.
Which years share wiring with the 2020 Ford F-150?
2015, 2016, 2017, 2018 and 2019. The 2018 refresh changed the engines and the under-hood fuse numbers, not the in-cab wires.
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