Find a DC short circuit without blowing fuses
How to build and use a dim-bulb test to locate a short in your 12-volt DC wires
I learned this trick more than 50 years ago, and it’s a great way to locate an interment short circuit in your RV’s 12-volt DC wiring without blowing a bunch of fuses. This 11 minute video shows you how it’s done. Please share this with your RVing colleagues.
I've found a 120-volt dim-bulb tester that's already built. Just needs a few adapter cables and it should work great for troubleshooting 120-volt AC circuits in RVs. Stay tuned!
Southwire 2105-0T discontinued.