Connecting 25 Amp Redarc In-Vehicle BCDC Battery Charger to Ignition Wire
Updated 04/07/2021 | Published 04/02/2021
Products Featured in This Question
Question:
331-BCDC1225D This was suggested to protect my alternator from a lithium battery on my camper drawing too much power. If wire as suggested with a separate plug, what stops my original 7-way trailer wire from drawing too much power? If the ignition wire powers this and its installed in a camper, I didnt see in the video anything being ran back except the black and red 6 gauge cable. How is the ignition wire connected?
asked by: Chad
Expert Reply:
Let's start with the ignition wire you were asking about for the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp # 331-BCDC1225D.
What you will do is connect the blue wire from the charger directly to an ignition source via 8 gauge wire so it will be a direct connection to wiring that gets power when your ignition is turned on. If you have a smart alternator or have a long run to an ignition source you can also use the 60-Amp Relay Kit for Redarc In-Vehicle BCDC Battery Charger # 331-RK1260.
Now, in regards to the 7-way, there isn't anything stopping it from drawing too much power if connected to a lithium battery (which is what I think you're asking, if I'm understanding correctly). The answer is you wouldn't want to go from your 7-way to the battery, you would just use the BCDC to charge the battery. The only other thing to keep in mind is that for install you would also need the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger # 331-FK40.
I have added a link below to a video review of this as well as instructions for these parts that I recommend taking a look at.
Product Page this Question was Asked From
40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger
- Accessories and Parts
- Battery Charger
- Fuse Kit
- Redarc
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: 40 amp fuse
- Shop: 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger
- Video: Best 2012 Honda CR-V Custom Fit Vehicle Wiring Harness Options
- Video: Best 2012 Honda CR-V Trailer Hitch Options
- Video: Curt T-Connector Vehicle Wiring Harness Review C56040
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Search Results: trailer wiring
- Article: Trailer Wiring Diagrams
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Search Results: trailer tires and wheels
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Video: Curt Class III Trailer Hitch Step-By-Step Install - 2026 Honda CR-V
- Article: How to Choose the Right Trailer Hitch Class
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Search Results: trailer hitch ball mount
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Comparing the Curt Hitch C13416 and EcoHitch Hitch 306-X7396 for a 2019 Toyota RAV4
- Shop: Brake Controller
- Search Results: trailer jack
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Video: Clean Up Your Trailer Wiring
- Shop: Base Plate for Tow Bar
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Q&A: How to Replace a Lance 6-Pin Plug w/ a Standard 7-Way Connector
on Accessories and Parts
