I am sure you should have more than 6 volts when all brakes are applied, but less than 12.5 v; probably 11 v or so. Your ohm reading thru the magnets sounds good. I did a quick google search and the amp draw should be 3 amps per wheel at 12v for a total of 12 amps if you have 4 brakes. Less than 3 amps per wheel you have bad connection. If your wiring ohms out good : almost 0 ohms, you may need heavier guage wire to operate the brakes, although 14ga should be good. Most meters can only take 10 amps so I would do 2 at a time or you will blow the internal fuse in the meter. I am betting on the wiring having high resistance (high ohms reading). Google search ELECTRIC TRAILER BRAKES TROUBLESHOOTING. There is a good answer under about the 4th result. Let us know Good luck, Mark
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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