Trailer Connector Pinouts with industry-standard colors
IF THE IMAGE IS TOO SMALL, click it.
--------------------------------------------------------------------------------
UPDATE: SAE J2863 revised the colors again, which are now below.
Instead of fighting antique wire colors & connectors, just swap to the modern
USCAR standard socket, which will accept a variety of trailer sockets without any more splicing.
--------------------------------------------------------------------------------
TSB 89-14-17 Trailer Wiring Colors
Publication Date: JULY 14, 1989
LIGHT TRUCK: 1990 BRONCO, F-150, F-250, F-350
ISSUE: Trailer tow wire harness color codes have been revised to be compatible with SAE color code standards. When hooking up a vehicle to a trailer that has been wired according to the SAE standard, the wire color/circuits will match.
ACTION: Refer to the following Circuit Color Code Chart for the correct color/circuit usage.
CIRCUIT COLOR CODE CHART
CIRCUIT FUNCTION - OLD COLOR* - OLD SAE COLOR* - SAE J2863 COLOR
Trailer LH Turn/Stop - LG/O - Y - Y
Trailer RH Turn/Stop - O/LB - DG - DG
Trailer Brake Lamp From Controller - R/LG - R/LG - X
Trailer Electric Brakes Solenoid - BL/BR - DB - DB
Trailer Back Up - BK/PK - R/Y - BK/LG
Trailer Ground - W - W - W
Trailer Running/Tail - W/R - BR/W - BR/W
Trailer Power (Battery Charge) - Y - O - O
Trailer Brake Control Feed - R - R - X
Color Key - Color Abbreviations
BL or BU-Blue
BK-Black
BR-Brown
DB-Dark Blue
DG-Dark Green
GY-Gray
LB-Light Blue
LG-Light Green
O or OR-Orange
PK-Pink
P or PU-Purple
R-Red
T-Tan
V-Violet
W or WH-White
Y-Yellow
X-none specified
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
--------------------------------------------------------------------------------
See also:
TSB
http://www.revbase.com/BBBMotor/TSb/DownloadPdf?id=44045Page 142 of
this PDF is universal.
.
.
.
(WPT-421) .
_________________________________________________
7-circuit (8-post) insulated terminal block Grote
Truck-Lite 50820Dynamic 7-blade truck-side tester4/5/6/7 trailer-side tester 
![trailerconnectors.jpg Trailer Connector Pinouts with industry-standard colors
IF THE IMAGE IS TOO SMALL, click it.
--------------------------------------------------------------------------------
UPDATE: SAE J2863 revised the colors again, which are now below.
Instead of fighting antique wire colors & connectors, just swap to the modern [url=https://www.amazon.com/dp/B0B1ZF56Y2]USCAR standard socket[/url], which will accept a variety of trailer sockets without any more splicing.
--------------------------------------------------------------------------------
TSB 89-14-17 Trailer Wiring Colors
Publication Date: JULY 14, 1989
LIGHT TRUCK: 1990 BRONCO, F-150, F-250, F-350
ISSUE: Trailer tow wire harness color codes have been revised to be compatible with SAE color code standards. When hooking up a vehicle to a trailer that has been wired according to the SAE standard, the wire color/circuits will match.
ACTION: Refer to the following Circuit Color Code Chart for the correct color/circuit usage.
CIRCUIT COLOR CODE CHART
CIRCUIT FUNCTION - OLD COLOR* - OLD SAE COLOR* - SAE J2863 COLOR
Trailer LH Turn/Stop - LG/O - Y - Y
Trailer RH Turn/Stop - O/LB - DG - DG
Trailer Brake Lamp From Controller - R/LG - R/LG - X
Trailer Electric Brakes Solenoid - BL/BR - DB - DB
Trailer Back Up - BK/PK - R/Y - BK/LG
Trailer Ground - W - W - W
Trailer Running/Tail - W/R - BR/W - BR/W
Trailer Power (Battery Charge) - Y - O - O
Trailer Brake Control Feed - R - R - X
Color Key - Color Abbreviations
BL or BU-Blue
BK-Black
BR-Brown
DB-Dark Blue
DG-Dark Green
GY-Gray
LB-Light Blue
LG-Light Green
O or OR-Orange
PK-Pink
P or PU-Purple
R-Red
T-Tan
V-Violet
W or WH-White
Y-Yellow
X-none specified
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
--------------------------------------------------------------------------------
See also:
TSB http://www.revbase.com/BBBMotor/TSb/DownloadPdf?id=44045
Page 142 of [url=https://madocumentupload.marketingassociates.com/api/Document/GetFile?v1=4726945&v2=020819100215&v3=60&v4=7860b6e13fbba6ada16f6c0ed517bde5eafde6326380d805ee7fda38&v5=False]this PDF[/url] is universal.
[url=https://www.supermotors.net/registry/2742/84974-4][img]https://www.supermotors.net/getfile/1067162/thumbnail/intro03.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/738260][img]https://www.supermotors.net/getfile/738260/thumbnail/trailerwiring9496.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/909862][img]https://www.supermotors.net/getfile/909862/thumbnail/trailer93.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/670235_1][img]https://www.supermotors.net/getfile/670235/thumbnail/trailerconn96.jpg[/img][/url] (WPT-421) . [url=https://www.supermotors.net/registry/media/1034735][img]https://www.supermotors.net/getfile/1034735/thumbnail/7pin93.jpg[/img][/url]
_________________________________________________
7-circuit (8-post) insulated terminal block Grote [url=https://www.amazon.com//dp/B0085A7HLM]Truck-Lite 50820[/url]
[url=https://www.amazon.com/dp/B073FJ5NVL]Dynamic 7-blade truck-side tester[/url]
[url=https://www.amazon.com/dp/B00FJJWMUS]4/5/6/7 trailer-side tester[/url]](https://www.supermotors.net/getfile/822003/fullsize/trailerconnectors.jpg)