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Post by wisconsinjoe on Aug 4, 2020 9:58:45 GMT -8
I know that Vikx suggests testing 12 volt wiring with a portable jump starter (which I don't have). So, I tried using a small 12 volt transformer used for a run of outdoor 12 volt lighting fixtures. When hooked up to this the light I was testing (not installed in camper yet) came on, but flashed on and off about every second or less. If I try to read the voltage from a battery voltage meter, I get a reading of zero that flashes at the same rate.
Anybody know what is going on? Are my landscape lights different than the ones designed for trailers? Does there need to be a minimum power draw to work (...I know there is a maximum). Is the transformer putting out AC instead of DC. I'm just confused.
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Post by vikx on Aug 4, 2020 11:26:05 GMT -8
Most landscape lights are 12 volt DC. I'm guessing the transformer is sensing something "wrong" in the landscape system. It could be so low in amperage output that it can't operate a "normal" 12 volt light. Also, LEDs are not the same as incandescent bulbs and sometimes require resisters to operate.
Use a clean 12 volt power supply for testing. That would include a portable battery, a car battery, a jump start Li battery or a universal transformer putting out 12 volts. I would say 1 to 2 amps per transformer.
You can use your vehicle battery with long jump wires to test the trailer wiring. Be SURE to install an inline fuse on the hot when doing this to protect the car's electronics. Disconnecting the vehicle ground when testing provides even more protection.
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