How to Wire Up the 12 Volt Accessory Circuit of a 7-Way Connector
Updated 04/08/2015 | Published 04/07/2015
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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
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