How to Wire Up the 12 Volt Accessory Circuit of a 7-Way Connector
Updated 04/08/2015 | Published 04/07/2015
Products Featured in This Question
Question:
2005 Toyota Highlander V6 conventional not hybrid with tow package. I have 4 pin wiring connected to a 7 pin connector for lights, all OK. No need for brake controller at the moment because I have a light trailer with surge brakes. But I would like to wire 12VDC accessory power to the 7 pin connector on the tow vehicle. I think a battery interrupter makes sense to do at the same time. Question - will this kit with a 95A battery isolator be what I need or is there additional fuse/breaker/wiring needed for the 12VDC from the car battery? Related - I only have one trailer needing the 12VDC - is it better/easier to install the isolator in the trailer or in the tow vehicle? Many thanks
asked by: Medwin
Helpful Expert Reply:
The Deka Battery Isolator Installation Kit # DW08769 would be one option for running a power wire to the 12 volt accessory circuit of your 7-way. Keep in mind that this only has 15 feet of wire which may or may not be enough for you.
Typically we recommend people use a length of 10 gauge wire like part # 10-1-1 sold by the foot to power that circuit. The # DW08769 includes 8 gauge wire and a 50 amp breaker. Normally a 40 amp breaker like part # 9510 is recommended.
For an isolation solenoid you would actually want the part # PK5231201. This will allow you to make the 12 volt circuit active only when the key of your vehicle is on.
Product Page this Question was Asked From
Deka Battery Isolator Installation Kit for Standard Alternators - 8 Gauge Wire
- Accessories and Parts
- Battery Charger
- Battery Isolator Install Kit
- Deka
more information >
Continue Researching
- Shop: UWS A-Frame Trailer Toolbox - Low Profile - 2.9 cu ft - Bright Aluminum
- Video: Checking Out the Stromberg Carlson Electric Trailer Jack
- Shop: Vent Cover for Ventline Old Style Rounded Dome Trailer Roof Vents - White
- Shop: Stromberg Carlson Electric Trailer Jack - Drop Leg - A-Frame - 23" Lift - 5,000 lbs - Black
- Shop: Replacement Dome Seal for Ventline Ventadome Trailer Roof Vents
- Video: How to Set Up Your Ultra-Fab Ultra Scissor Jacks on a 2021 Dutchmen Coleman Lantern Travel Trailer
- Q&A: Weight Capacity Of The Lippert High-Speed Power Stabilizing Jack # LC298707
- Search Results: bvd0455~01
- Search Results: solar
- Search Results: rv vents and fans
- Shop: Norcold Polar Full RV Refrigerator w Freezer - 9.7 Cu Ft - 12V - Stainless Steel - Right Hand Doors
- Shop: Go Power Solar Flex Charging System with MPPT Solar Controller - 550 Watt Solar Panels
- Shop: Gen-Y Weld-On 2-1/2" Receiver Tube - 12" Long - Steel
- Search Results: eternabond
- Q&A: Dimension from Mounting Bracket to Top of Jack on JET-5000 Electric Trailer jack 5,000 Pounds
- Q&A: How to Charge a Trailer Battery Through a 7-Way Connector
- Q&A: Will the Hopkins Engager Trailer Breakaway Kit Keep Charging the Battery with the Truck Turned Off
- Q&A: How Long Does the Alpha Systems Alphabond Repair Tape for RV Roofs AL32KV Last?
- Video: Vent Cover for Ventline Old Style Rounded Dome Trailer Roof Vents: The Breakdown
- Video: Let’s Check Out the RC Manufacturing T-Series Trailer Tongue Tool Box
- Video: A Look at the Power Mountain Tallboy 6 Ton Off-Road Bottle Jack with a Military Cargo Trailer
- Q&A: How Much Do the Power Mountain Tallboy Off-Road Bottle Jacks Weigh?
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Search Results: trailer tires and wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Replacement Dome Assembly for Ventline Ventadome Trailer Roof Vent Spec Review
- Article: How to Measure for Trailer Hitch Drop
on Accessories and Parts
