E-350 and E-450 cutaway and stripped chassis. Key start.
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Which wires give constant, ignition and ground on a 2023 Ford E-Series Cutaway?
On a 2023 Ford E-Series Cutaway, the wire locations below come from the sources listed on each row. 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 2023 Ford E-Series cutaway and stripped chassis (E-350 and E-450). The 2021 update brought a new instrument cluster, the 7.3L V8 and new wiring, so 2018 and older colors at the dash do not carry over.
Ford's 2023 owner's manual and spec sheet confirm the upfitter switch and trailer colors. We found no 2023 source for the dash wires, so those rows show the 2021 to 2022 colors to check. Our own team has not yet metered these on a 2023 truck, and each row says so.
OBD-II portUnder the driver dash
Best power spotDash fuse box
System voltage12V
Ignition typeKey
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Where do I get constant, ignition and ground on a 2023 Ford E-Series Cutaway?
Take constant, ignition and ground from the same area. The 2021 update changed the E-Series wiring, so older E-Series colors at the dash and ignition switch do not carry over.
Option 1 Under the dash
Dash fuse box and ignition switch
Body control module fuse box and the ignition switch plug. Key start.
Constant
Not confirmed
Not confirmed for 2023The 2021 to 2022 sheet lists Red (50A) at the dash fuse box J7-G, pin 22. Meter it.
Ignition
Not confirmed
Not confirmed for 2023The 2021 to 2022 sheet lists White/Orange at the ignition switch 7-pin, pin 1. Meter it.
Ground
Body ground
Body metal under the dashClean, bare metal only. Never the battery negative post.
Never tap the starter circuit for power.
Option 2 Ford upfitter
Ford B-pillar connector
Ford still builds the B-pillar vehicle connector into cutaways, but we could not read its 2021 and newer colors.
Constant
Colors not read
Ford B-pillar vehicle connector (cutaway)Ford's fuse chart lists this connector on fuse F52 (50A), and the stripped chassis instrument panel connector on F43 (30A). Ford's pin colors for it are in pictures we could not read.
Upfitter module
Not found
Upfitter interface module (cutaway, optional)Fused at F29 (15A) in the passenger fuse box. Pin colors not found.
The 2009 to 2018 colors (Green/Red battery, Yellow/Orange run/start) are not confirmed for 2021 and newer. Meter every pin.
Power wires from no 2023 source we could read; the text shows the 2021 to 2022 colors to check.
What are the turn signal, reverse and light wires on a 2023 Ford E-Series Cutaway?
Circuit
Wire color
Location and what it does
Left turnNot foundNot yet checked
Not found
Not confirmed for 2023The 2021 to 2022 installer sheet lists Blue/Green (front) and Gray/Orange (rear) at BCM 40-pin J6-F, pin 39 (front); blue 52-pin J5-E, pin 26 (rear). We found no 2023 source; meter it.
Right turnNot foundNot yet checked
Not found
Not confirmed for 2023The 2021 to 2022 installer sheet lists Yellow/Violet (front) and Green/Orange (rear) at BCM 40-pin J6-F, pin 38 (front); blue 52-pin J5-E, pin 52 (rear). We found no 2023 source; meter it.
Park lightNot foundNot yet checked
Not found
Not confirmed for 2023The 2021 to 2022 installer sheet lists Green/Orange (left front) and Brown/Yellow (right front) at BCM 40-pin J6-F, pins 30 and 37. We found no 2023 source; meter it.
HeadlightNot foundNot yet checked
Not found
Not confirmed for 2023The 2021 to 2022 installer sheet lists Blue at headlight switch 16-pin, pin 12. We found no 2023 source; meter it.
ReverseNot foundNot yet checked
Not found
Not confirmed for 2023The 2021 to 2022 installer sheet lists Green/Brown at BCM black 22-pin J7-G, pin 19. We found no 2023 source; meter it.
Dome lightNot foundNot yet checked
Not found
Not confirmed for 2023The 2021 to 2022 installer sheet lists Gray/Violet at black 36-pin J3-C, pin 13. We found no 2023 source; meter it.
Each chip shows the main insulation color with its stripe. Not confirmed for 2023; the 2021 to 2022 installer colors are in the text of each row.
Where are the brake, door, speed and CAN wires on a 2023 Ford E-Series Cutaway?
Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Violet/White
Trailer tow harness, stop lamp feed (circuit CCB08)From Ford's 2023 E-Series spec sheet trailer table. Ford prints the park lamp (CLS30) in the same color, so meter it.
TachAC signalNot yet checked
Blue
Customer access harness on the driver fender, black 12-pin, pin 4Engine speed output (Ford circuit CE913). Ford's 2021 E-Series body builder book and the 2021 to 2022 installer sheet agree. Carried to 2023; meter it.
Upfitter switchesPositive +Not yet checked
Yellow
Green/Brown
Violet/Green
Brown
Blunt-cut in the underhood cowl shield above the engine computerAux switch 1 to 4 outputs (40A, 40A, 20A, 20A). From Ford's 2023 owner's manual.
Vehicle speedNot foundNot yet checked
Not found
Not foundFord's 2021 book lists speed (VMC05) and a new park brake circuit, but our reads could not tell which color goes with which.
Sources: an installer sheet for a 2021 to 2022 E-350 on the12volt (installer-reported), Ford's 2021 E-Series body builder book (OEM), Ford's E-Series spec sheet trailer tables 2021 to 2024 (OEM), and Ford's owner's manuals 2021, 2023 and 2025 (upfitter switches). Ford's B-pillar and upfitter module pin colors, vehicle speed and parking brake were not found.
Which years share wiring with the 2023 Ford E-Series Cutaway?
This page2023Ford 2023 manual and spec sheet.
Same wiring2021, 2022, 2024 and 2025The 2021 update layout. Our installer sheet covers 2021 to 2022; Ford's manuals and spec sheets confirm some wires through 2025.
Not this page2018 and older, 20262008 to 2018 E-Series have their own pages. Ford built no 2020 E-Series. We found no 2026 source yet.
Where are the fuse boxes and ground points on a 2023 Ford E-Series Cutaway?
Passenger fuse boxUpfitter moduleF22 (5A) body builder B-pillar connector and F29 (15A) upfitter interface module, cutaways.
Ground pointsClean body metalUse clean, bare body metal, never the battery negative post.
Fuse numbers from Ford's 2021 owner's manual. Our team has not yet checked them on a truck.
Where is the OBD-II port on a 2023 Ford E-Series Cutaway?
OBD II
Diagnostic portOBD-II port: under the driver dashPlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Common questions about 2023 Ford E-Series Cutaway wiring
Where is the reverse wire on a 2023 Ford E-Series Cutaway?
The wire color is not published. The 2021 to 2022 installer sheet lists Green/Brown at BCM black 22-pin J7-G, pin 19. Meter it before you tap it.
Where is the brake wire on a 2023 Ford E-Series Cutaway?
Violet/White (positive +) at the trailer tow harness, stop lamp feed (circuit CCB08). From Ford's 2023 E-Series spec sheet trailer table. Meter it before you tap it.
Which years share wiring with the 2023 Ford E-Series Cutaway?
2021, 2022, 2024 and 2025. The 2021 update layout.
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No one has sent photos for the 2023 Ford E-Series Cutaway 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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The plugs, tap points, fuse boxes and ground points. Phone photos are fine.
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