Should The Trailer 12 Volt Hot Wire Be Connected To Hot Wire On Vehicle 7-Way?
Updated 08/21/2023 | Published 08/19/2023
Question:
Thanks. My Lakota trailer connections are the same … but the black wire from the trailer is always hot and it will connect to the hot pin from the truck is this correct? Hot to hot? Will there be damage if these 2 circuits are connected? No one here in NC knows the answer The horse trailer is a goose neck with a break away brake System. Thanks for any help
asked by: Ken E
Expert Reply:
A Diode # RM-690 can be used to prevent battery power from your trailer traveling to your tow vehicle. This diode is rated up to 85 amps which is more than the charging system on your vehicle is capable of providing. Having it connected hot to hot allows you to use your vehicle power to charge the battery and also power any lights or electric jacks off your vehicle when the trailer battery is dead.
If your trailer only uses the power for a breakaway battery you can instead us the Charger # 20011 instead of the diode above. The charger helps to prevent over charging the battery and causing it to overheat.
Product Page this Question was Asked From
Roadmaster Single Park Light Diode
- Accessories and Parts
- Flat Tow Wiring Harness
- Diodes
- Roadmaster
more information >
Continue Researching
- Search Results: outdoor carpet
- Search Results: water heater check valve
- Q&A: How To Install A Roadmaster Hy-Powered Diode On Trailer 7-way
- Q&A: Diode Recommendation to Prevent Trailer Battery From Backfeeding onto Vehicle Wiring
- Q&A: Is a Diode Required on the 12 Volt Pin for Charging a Trailer Battery
- Q&A: Charging A Trailer Battery From The 7-Way 12v Power Pin And Preventing Feedback
- Shop: Roadmaster Single Park Light Diode
- Shop: Roadmaster Hy-Power Diodes (Qty 4)
- Video: RV City Water Inlet with Brass Check Valve Review
- Shop: Optronics LED License Plate Light - Submersible - 1 Diode - Chrome Housing - Clear Lens
- Shop: RV City Water Inlet with Brass Check Valve - 1/2" MPT - Metal Flange - Surface Mount - White
- Shop: RV City Water Inlet with Brass Check Valve - 1/2" MPT - Plastic Flange - Surface Mount - White
- Shop: RV City Water Inlet w/ Brass Check Valve - 1/2" FPT - Plastic Flange - Surface Mount - White
- Shop: RV City Water Inlet w/ Brass Check Valve - 1/2" MPT - Plastic Flange - Surface Mount - White
- Search Results: cabinet
- Search Results: license plate lights
- Search Results: led strip lights
- Search Results: breakaway switch cable
- Q&A: Trailer Breakaway Kit Battery Charger 20011 Operating Temps, Current Draw, Type of Charging
- Q&A: How Do Trailer Batteries Normally Get Charged When Being Towed
- Q&A: Can a Trailer Break Away Battery be Charged from the 7-Way Trailer Connector
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Suspension Enhancement
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Video: B&W Companion OEM 5th Wheel Hitch Manufacturer Breakdown
on Accessories and Parts
