Truck power to trailer
One of the pins on the 7 pin connector is supposed to supply power to the trailer. Mine doesn’t seem to be working. If I measure the voltage at the battery, it does not go up at all when I connect t...
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What bothers me is that 13.2 when connected to 13.8. I would normally consider that to mean the battery was low on being connected --maybe even 50% SOC.
The OP says it was 13.0 to start with, so that does not compute. IMO stick an hydrometer in it to remove all doubt. I would at least go camping near where there is a battery store, or else take along a spare. But again, I do not have a good picture of what is going on.
You can have high voltage, but where it does not hold that high on loading. The OP seems to have a clue, so this is just me being a worry wort.
The OP says it was 13.0 to start with, so that does not compute. IMO stick an hydrometer in it to remove all doubt. I would at least go camping near where there is a battery store, or else take along a spare. But again, I do not have a good picture of what is going on.
You can have high voltage, but where it does not hold that high on loading. The OP seems to have a clue, so this is just me being a worry wort.
