How to Determine if Trailer 7-Way is Upside Down for Determining Pin Out
Updated 01/12/2026 | Published 03/03/2020
Question:
The explanation of what terminal controls which function in a seven pin plug by Michael H. is very helpful. i.e. one oclock hot lead, 3 oclock right turn/brake, etc. My problem is that I have a 2014 Silverado and GM has flipped the socket on the truck. Does that mean that the explanation given by Michael is flipped as well? Meaning one oclock is now 5, 3 oclock is now 9, 5 oclock is now 11, etc?
asked by: Paul B
Expert Reply:
I attached a picture of a 7-way wiring diagram for you to check out to help show you where all of the pins of the connector are. If your 7-way is upside then yes the diagram would need to rotate 180 degrees. You can use the notch of the 7-way to determine if this the case. The square notch is normally on top of the connector so if yours is on the bottom then it is inverted.
Product Page this Question was Asked From
Dexter Electric Trailer Brake Assembly - 12" - Right Hand - 6,000 lbs
- Accessories and Parts
- Trailer Brakes
- Electric Drum Brakes
- RH
- 6000 lbs
- Brake Assembly
- Manual Adjust
- 12 x 2 Inch Drum
- Dexter
more information >
Continue Researching
- Video: CE Smith Boat Trailers Post-Style Guide-Ons Review for Easier Boat Loading
- Shop: CE Smith I-Beam Clamps for Boat Trailers - Galvanized Steel - 2 Sets
- Shop: CE Smith Post-Style Guide-Ons for Boat Trailers - 40" Tall - White - 1 Pair
- Search Results: trailer hitch ball mount
- Search Results: curt trailer hitch ball mount
- Search Results: 2 5 16 ball
- Search Results: curt trailer hitch
- Shop: etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
- Shop: Curt Ball Mount for 2" Hitches - 1" Rise, 2" Drop - 8,000 lbs - Aluminum
- Shop: Trailer Wiring
- Search Results: 3062~p
- Video: etrailer 7 Way Upgrade Kit With Junction Box Installation
- Q&A: Looking For Good Quality 7-Way Trailer Side Pigtail
- Video: How to Install the etrailer Universal Installation Kit for Trailer Brake Controllers - 2019 Subaru F
- Shop: Trailer Valet Ball Mount w/ 2" Ball - 2" Hitch - 2" Drop - 5,000 lbs
- Shop: Brake Controller
- Q&A: 7 Way Trailer Plug Will Not Stay Seated In the Vehicle 7 Way
- Shop: Curt Ball Mount for 2" Hitches - 1" Rise, 2" Drop - 8,000 lbs - Aluminum
- Shop: Curt Adjustable 2-Ball Mount - 2" Hitch - 5-1/2" Drop, 4-1/2" Rise - 15K
- Article: Practice Safe Trailer Towing with These 4 Tips
- Q&A: Trailer Wiring for 2025 Subaru Ascent that Can Also Charge a Trailer Battery
- Q&A: Instructions to Wire a Trailer for Electric Brakes
- Video: Installing the Curt T-Connector Vehicle Wiring Harness on a 2024 Subaru Ascent
- Video: Feature Breakdown: Universal Installation Kit for Trailer Brake Controller
- Video: In-Depth Review of the Universal Installation Kit for Trailer Brake Controller
- Shop: Trailer Hitch
- Video: Installing the etrailer Installation Kit for Trailer Brake Controllers on a 2024 Nissan Pathfinder
- Q&A: Troubleshooting Curt Spectrum Brake Controller that Shows 3.4 Volts on Output at All Times
- Search Results: trailer hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
on Accessories and Parts
Marc
1/9/2026
Hello,this inverted plug was asked earlier,mine notch is also facing down.with the notch facing down,the ground wire is connected to the post at the 5 o'clock location viewing it from the back of the plug.is this correct?I took a photo but can't post it.ps am I gonna get charged for this? Thanks marc