Is a Fuse Necessary When Wiring a 7-way If 12V Wire Already Is Fused
Question:
Hello, Finishing up wiring my 7 Way, one of the diagrams suggest that for my 12V, I should use a fuse block or fused battery lead. What would you suggest I go with? My 12V wire is 12 ga, wire. Is a fuse necessary if it is already used at the front of the truck for my 12V? Or is it recommended I install a separate one. If this is the case, what you you recommend for a fuse. Thank you
asked by: Ryan
Expert Reply:
If the truck has a 12V power wire dedicated to the trailer wiring that is already fused, you do not need to add an additional fuse.
For example, on newer GM trucks, the 12V power wire from the factory tow package is ran to a 40 amp fuse in the fuse box. In this instance, it is not necessary to add an additional fuse. If you have to run a new 12V power wire, then we recommend adding a 40 amp circuit breaker, like # 9510, before the battery.
If you would like to let me know the year, make, and model of your vehicle, I will be happy to provide a more specific answer for you.
Products Referenced in This Question
40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket
- Accessories and Parts
- Wiring
- Circuit Breaker
- 40 Amp
- Pollak
more information >
Product Page this Question was Asked From
Spectro 12-Gauge Mini Fuse Holder - Qty 1
- Accessories and Parts
- Trailer Wiring
- Wiring
- Fuse Holder
- Spectro
more information >
Continue Researching
- Shop: Spectro 12-Gauge Mini Fuse Holder - Qty 1
- Shop: Portable Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 30 Amp
- Shop: Power Watchdog Surge Protector with Bluetooth - Portable - 30 Amp
- Shop: 12 Volt Outlet with Waterproof Cap - 10 Amp - Black
- Shop: Redarc Smart Start Battery Isolator - 24 Volt - 200 Amp
- Shop: 40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket
- Search Results: inline fuse
- Q&A: How to Charge a Trailer Battery Through a 7-Way Connector
- Shop: Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - Hardwired - 50 Amp
- Search Results: 30 amp surge protector
- Search Results: ems~pt30x
- Q&A: Does The Peterson Accessory Plug and Socket Kit Come With A Fuse
- Video: Diamond 12V Power Accessories - Power Socket - DG6112VP Review
- Q&A: Dimensions of 12 Volt Outlet with Waterproof Cap # DG6112VP
- Article: Trailer Wiring Diagrams
- Video: Titan Trailer Brakes T2385200 Review
- Search Results: 25580
- Q&A: Replacement 5 Leaf Slipper Spring for a Tandem Axle Dump Trailer with Two 6K Axles
- Shop: Trailer Hitch
- Search Results: 44649
- Shop: Trailer Wiring
- Q&A: Recommended Replacement for Atwood Surge Brake Actuator 85778
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Brake Controller
- Video: Choosing the Right Trailer Wiring
- Article: How to Choose the Right Trailer Hitch Class
- Q&A: Can I Charge My Trailer Battery Using 7-Way Trailer Connector on Truck
- Search Results: 68149
- Article: Trailer Tire Sizing
- Q&A: Bolts and Bracket for the Tie Down Caliper to Kodiak Caliper