Sounds like the wiring on the 2006 Dodge Magnum is working since you have tested it. But, make sure that the main ground for the converter is attached to a bare metal surface. Moving the ground might help as well. Sometimes, when there is very little load on a system with a bad ground, like using a tester, the problem will not show up until there is more power draw. I also recommend trying out the trailer on another vehicle if possible.
After checking that, that leaves the trailer. Most... view full answer...
Although taillight converters, just like any other electronic device have a set lifespan, losing two of them in rapid succession tells us that something is going on.
The two most likely causes are a short circuit in the trailer wiring and overloading the converter.
First, check the wiring on your trailer. Beginning at the trailer connector and working your way back to each lamp, closely examine the wiring. Wire insulation can become brittle over time, look for any cracked or worn wire... view full answer...
You did indeed purchase a trailer hitch from etrailer back in January of this year but I did not find a record of a wiring harness purchase.
In any case the problem you describe is most likely caused by either a damaged wiring harness or by a bad connector at the vehicle or trailer. I suggest you first check that the ground wire is firmly attached to a clean bare metal surface. A bad ground can cause all sorts of weird issues. If this does not help next disconnect the harness connectors... view full answer...
It sounds to me like you may have a ground problem. There are several places to look for a poor ground connection. I recommend starting with the trailer connector on the vehicle. You will want to check to make sure it is securely grounded to a clean metal surface on the vehicle frame or chassis.
Next, I would take a look at the connector on the trailer. Check to make sure that it is free of dirt and corrosion and that the ground wire is securely grounded to a clean metal surface on the... view full answer...
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