How to Get Constant Power to a Vehicles 7 Way Plug
Question:
2007 Ford Sport Trac only has constant power to trailer plug when engine is running, is there a way to make this constant poer when engine is off ? very unsafe when using wheelchair lift
asked by: Kevin C
Expert Reply:
You can definitely run constant power to the 7 way if needed. All you would need is a length of wiring and a circuit breaker. Twenty feet of the Deka 12 Gauge Primary Wire # 12-1-1 would give you a bit of excess, but it never hurts to get a little more than ending up needing a little more. I highly suggest going with a 40 amp circuit breaker since this will be installed directly in line from the battery to the 7 way plug.
You will need to remove the 12 volt power wire from the 7 way, which is in the 2 o'clock position when looking at the back of the vehicle. If you are unsure of its location, the 7 Way Tester # C73NR does make it easy to find. Once that is removed, you will need to insert and secure the 12 gauge wire # 12-1-1 and run it up to the battery, making sure not to connect it to any moving parts. Before you connect the wire to the battery, you will want to find a location where the circuit breaker # PK54540 can be installed. As this will be constant power, it wouldn't hurt to find a location that is easy to access in case it burns out. But this is all you would need to do to get up and running. I will add that it is also a good idea to bind the added power wire to the other wires on the back of the 7 way with electrical tape or a heat shrink type material to seal the connection and keep it from coming loose.
Products Referenced in This Question
Pollak Circuit Breaker - Cycling/Automatic Reset - 40 Amp - Straight Mount Bracket
- Accessories and Parts
- Wiring
- Circuit Breaker
- 40 Amp
- Pollak
more information >
Product Page this Question was Asked From
Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Electrical Tools
- Testers
- Circuit Tester
- Tow Function Tester
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Q&A: Troubleshooting Lack of 12V Power at 7-Way Trailer Connector on 2019 Ford F-150
- Q&A: How To Activate 12V Trailer Charge Circuit On 2019 Ford Super Duty With Factory 7-Way
- Shop: Trailer Wiring
- Q&A: How to Activate Trailer Tow Charge Circuit in 2017 Ford F-250
- Shop: Brake Controller
- Shop: 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Shop: Curt Soft Trac II Trailer Breakaway Kit with Battery Charger
- Shop: Bargman 7-Way, RV-Style Connector w/ 6' Long Coiled Cable - Trailer End
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Video: Bargman Wiring - Trailer Connectors - 54006-057 Review
- Shop: Pollak Circuit Breaker - Cycling/Automatic Reset - 30 Amp - Straight Mount Bracket
- Shop: Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional
- Shop: Bright Way Push-to-Test Trailer Breakaway Kit with 1-Amp Charger and 5 Ah Battery - Side Load
- Shop: 10 Gauge Primary Wire - Red - per Foot
- Article: How to Charge a Trailer Battery While Driving: 3 Common Problems (And How to Fix Them)
- Article: Testing Trailer Brake Magnets for Proper Function
- Q&A: How To Send Constant Power to 12 Volt Pin On Trailer Connector On 2020 Ford F-350
- Article: Trailer Wiring Diagrams
- Shop: Suspension Enhancement
- Q&A: Troubleshooting 12 Volt Accessory Circuit Not Active on 2018 Ford F-150
- Article: How to Adjust Your Trailer Brakes | The Ultimate Guide
- Article: Trailer Drum Brakes vs. Disc Brakes: Making the Decision
- Video: Fulton Spare Tire Carrier - Frame Mount - FHDSTC0101 Review
- Video: Fulton Hi-Mount Spare Tire Carrier Review FHDSTC0101
- Q&A: Brake Assembly and Breakaway System for Trailer with 4,000 lb Axles
- Q&A: How is Length of 7-Way Connector Lead Determined for Wiring Up Trailer
- Video: Hopkins Wiring - Wiring Adapters - HM47085 Review
- Video: Curt Soft Trac II Trailer Breakaway Kit Installation
- Video: Bargman 7-Way RV-Style Connector with Coiled Cable Review
- Video: Bargman Wiring - Trailer Connectors - WG54006-043 Review