How to Power Trailer Lights from Battery when Not Connected to Tow Vehicle
Question:
I want to be able to turn on my horse trailer lights when not hooked to vehicle ....what to I need to know besides 2 diode and is that the same as battery isolator?
asked by: Kevin R
Expert Reply:
A battery isolator will cut off power once the solenoid is energized from another source. Diodes on the other hand only allow power to flow one way.
What you will need to do is run a power wire or wires from the positive battery terminal on a trailer battery to a switch such as # PK34571. Then you would run another wire from the switch to a diode # RM-690. Then run a wire from the diode to the trailer wiring for the lights you want to power.
Depending on what lights you want to use you may need more than one diode. If you just want the running light to work then you would just need the one diode.
I have included a picture illustrating this for you.
Products Referenced in This Question
Pollak Medium-Duty Toggle Switch - SPST- On-Off - 12 Volt - 20 Amp - 11/16" Handle
- Accessories and Parts
- Wiring
- Switches
- Toggle Switch
- Pollak
more information >
Roadmaster Single Park Light Diode
- Accessories and Parts
- Tow Bar Wiring
- Diodes
- Roadmaster
more information >
Continue Researching
- Shop: Everchill RV Refrigerator w/ Freezer - Reversible Doors - 10.7 cu ft - 12V - Stainless Steel
- Shop: Hydrastar Electric Over Hydraulic Actuator Adapter Module for Ford and Chevy Brake Controllers
- Q&A: Troubleshooting Incompatibility Error Brake Controller 2024 Chevy Silverado 3500
- Shop: Roadmaster Single Park Light Diode
- Shop: Pollak Medium-Duty Toggle Switch - SPST- On-Off - 12 Volt - 20 Amp - 11/16" Handle
- Video: Review of Roadmaster Tow Bar Wiring Diode - RM-790
- Shop: Roadmaster Hy-Power Diode - (Qty 1)
- Search Results: toggle switch
- Search Results: 12 gauge wire
- Shop: Roadmaster Battery Charge Line Kit for Towed Vehicles
- Video: Roadmaster Hy-Power Diode Review
- Video: Hydrastar Brake Actuator HBA-CAM Review
- Video: HydraStar Electric Over Hydraulic Disc Brake Actuator Installation - 2017 Grand Design Solitude Fift
- Shop: Seaflo Battery Disconnect Switch for Boats and RVs - On/Off - 900 Amps
- Video: Review of Roadmaster Tow Bar Wiring - Single Park Light Diode - RM-690
- Q&A: Can Roadmaster Diode # RM-790 be Used to Prevent Backfeeding to Vehicle
- Q&A: How To Determine Fit of Everchill RV Refrigerator - 10.7 Cu Ft - 12V - Stainless Steel
- Q&A: Recommended Toggle Switch to Run Lights on an ATV
- Q&A: What is the Voltage and Amperage Rating for Roadmaster Parking Light Diode
- Q&A: Maximum Amp Rating of Roadmaster Hy-Power Diode
- Q&A: Battery Disconnect Switch for Forest River Surveyor During Storage
- Video: Review of Everchill Premier Series Dual Swing RV Refrigerator Freezer - EV77FR
- Video: Everchill RV Refrigerator with Freezer Review
- Shop: Trailer Hitch
- Shop: Vehicle Tow Bar Wiring
- Article: How to Install a Brake Controller on Chevrolet / GMC 1999-2006 Pickups
- Article: Trailer Wiring Diagrams
- Article: How to Wire an Electric Winch
- Shop: Off Road Lights