Can a Trailer Battery be Directly Connected to the 12 Volt Circuit on a 7-Way Connector
Question:
I have a 2012 Tundra. I have a wire in my 7 pin connector that supplies 12V power only when the ignition is on. I is a 10ga wire on a 40 amp circuit.Can i wire this directly to my trailer battery without causing any damage.By doing this is will make 1 terminal on my trailer 7 pin hot all the time even when disconnected from truck unless i pull the inline fuse on trailer battery. Is this anything to be concerned about.Thanks for any help you can give.
asked by: Bill E
Expert Reply:
First, you can connect the 12 volt circuit directly to the trailer battery. However, the wiring in the trailer wiring package is not able to charge up the battery, it can only maintain its current charge level. To up charge the battery, you would need to use a battery charger like # CTEK56353.
Having a hot 12 volt circuit when the trailer is disconnected is not going to be a problem but if you want to be absolutely sure there is no power loss or back feeding issues, I would recommend disconnecting the trailer and/or pulling a fuse or installing a switch inline on the power wire going to the trailer battery if you are going to be stopped for long periods of time.
Product Page this Question was Asked From
CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power
- Battery Charger
- Battery Charger
- Car/Truck/SUV
- Motorcycle
- Trailer
- Lawn Mower
- Jet Ski
- 150 Ah
- Charges/Maintains
- 12V
- Wall Outlet to Vehicle Battery
- CTEK Power Inc
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Jacketed 2 Wire (Brake Wire) - 12 Gauge - per Foot
- Shop: 2-5/16" Hitch Ball w/ 1" Rise - 1-3/8" Diameter x 2-3/4" Long Shank - Raw - 30K
- Shop: Trailer Wiring Junction Box - 7 Color Coded Terminals - ABS
- Search Results: wiring junction box
- Search Results: 2 wire
- Search Results: flasher
- Q&A: How to Charge a Trailer Battery Through a 7-Way Connector
- Shop: Bright Way Solar Battery Charger - 7.5 Watt Solar Panel
- Shop: Trailer Wiring
- Shop: CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power
- Shop: Ultra Bright LED Flood Light - 9,000 Lumens - Black Aluminum - Clear Lens - 12V/24V
- Shop: Pollak 10-Terminal Junction Box
- Article: Solar Setups for Beginners (Feat. REDARC)
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: How to Mount Winch to Utility Trailer
- Q&A: Should Winch on Car Hauler Mount to Floor or Railing of Winch
- Q&A: Can a Trailer Battery be Charged from the Trailer Connector on a Truck
- Video: Vision X Lights - Utility/Work Lights - DURA-660FLUSH Review
- Shop: RV Interior Lighting
- Q&A: What is the Difference Between 7-Way RV and Utility Trailer Connectors
- Q&A: Is there a Way to Wire Trailer Rear Loading Lights to Work with Reverse Light Circuit on 7-Way
- Q&A: Wiring Fog Light on Trailer to Act as Reverse Light and Running Light
- Article: Trailer Wiring Diagrams
- Shop: Towing Mirrors
- Search Results: sewer cap
- Search Results: ch751
- Shop: Performance Chip Tuners
- Video: Camco RV Sewer CAM39463 Review
- Video: Camco RV Sewer CAM39452 Review
- Video: Camco RV Sewer Drain Cap Review
on Battery Charger
