The converter troubleshooting manual revealed that the converter is operating within specs and the charger is operating within specs.
HOWEVER. When I re-connected all the DC fuses after doing the converter test, the voltage shot up from the expected 13V to 17V. The troubleshooting manual indicated this could be a Battery Overcharge issue and directed me to the Battery Overcharge troubleshooting tree. Unfortunately, I need a "true RMS" voltmeter (which I don't have) to complete the troubleshooting tree on the Battery Overcharge.
But it also tells me to get the battery load tested and replace it if defective. I'll go ahead and get that battery tested in the meantime while I track down the right kind of voltmeter to borrow.
We also decided to clean the ground wire connection on the trailer frame, in case that was causing the DC current to flicker.
Unfortunately, the bolt was so rusted that it actually just broke off. So now we need to... drill a new bolt hole into the frame to reconnect all the ground wires to? I love how trying to fix one problem creates/reveals other problems and the repair job just balloons, don't you?
Has anyone tackled adding a new ground to the frame before?
