Troubleshooting an Electric Jack that keeps Blowing Fuses
Question:
This jack is brand new on my new trailer. worked great at the dealer and at home. Worked great on camping trip and back. last week I went to adjust my hitch height and jack blew the fuse. put a new one in it and 2-3 seconds in the down direction blew a fuse. replaced fuse again and blew fuse. what could be the problem? it is the mid range of function so its not bottoming out or going too high.
asked by: John A
Helpful Expert Reply:
Sounds like there is an electrical short somewhere in the jack circuit. Inspect the trailer jack wiring to see if there is any loose connections and frayed or damaged wiring that could be shorting causing the fuse to blow.
Also, if the jack has been extended too far, then trying to move the jack back into position will draw more amps then normal operation. This would cause the fuse to pop. Since you stated that you got the jack to start to retract again, then internal damage to the unit is probably unlikely. If the wiring checks out, then replace the fuse and try to get the jack to its final retracted setting. Then try to raise the jack again to see if the fuse will or will not blow.
![Jared P](https://images.etrailer.com/static/images/catg/people/1067_tn.jpg)
Product Page this Question was Asked From
Electric Jack w/ Footplate - A-Frame - 25-1/8" Lift - 3.5K - Black
- Camper Jacks
- Pop Up Camper
- Teardrop Camper
- Travel Trailer
- A-Frame Jack
- Leveling Jacks
- Tongue Jack
- Steel
- 3001 - 4000 lbs
- Electric Jack
- 18 Inch Lift
- Bolt-On
- 1 Jack
- etrailer
more information >
Continue Researching
- Shop: TorkLift PowerArmor Locking Battery Box - 6V and 12V Lithium Batteries - Powder Coated Aluminum
- Shop: Fifth Wheel Hitch
- Shop: Ram Removable, 6" Poly Caster Assembly for 2" Jack Tube - 1,200 lbs
- Video: Ultra-Fab Protective Cover for Electric A-Frame Jacks Review
- Search Results: ej~3520~bbx
- Shop: Ultra-Fab Protective Cover for Electric A-Frame Jacks - Vinyl - 10-1/2" x 13-3/4"
- Shop: Replacement Override Nut for Lippert Electric Trailer Jack
- Q&A: Troubleshooting Trailer Landing Gear that Blows Fuse when Motor is Good
- Shop: Hub Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Video: B and W Fifth Wheel BWRVB3270 Review
- Shop: MORryde Rubber Equalizers for Tandem Axle Trailers - 33" Wheelbase - 8K
- Q&A: Replacement Wheel To Fit Electric Jack with Footplate Part # EJ-3520-BBX
- Shop: Adjustable Width Trailer Hitch Receiver for RVs, 22" to 72" Wide
- Search Results: base pad
- Q&A: Fuse Keeps Blowing When Electric Jack is Used
- Video: TruRyde Bearing Kit for #84 Spindle Installation
- Search Results: rv electric tongue jack
- Search Results: jc~101
- Video: Curt Adjustable Width RV Trailer Hitch Installation - 2017 Forest River Rockwood Mini Lite Travel Tr
- Q&A: Do the Slider Rods of B&W BWRVK3270 Patriot 5th Wheel Hitch Need to Be Lubricated
- Q&A: How Does the Slider Mechanism on the B&W Patriot Work
- Q&A: Can I Use a Longer Pin Box on My 5th Wheel Trailer and B&W Hitch
- Q&A: Comparing the B&W Patriot 16K, Curt A16, and Reese 16K 5th Wheel Hitches
- Video: Curt RV and Camper Hitch - Frame Mount Hitch - 13703 Review
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Search Results: electric jack motors
- Video: B and W Patriot 5th Wheel Trailer Hitch Installation - 2018 Ram 2500
- Video: B and W Patriot 5th Wheel Trailer Hitch with Slider Review
- Search Results: reese
- Shop: RV Jack Pads