Most often we find that a short has developed in the wiring which is usually caused from the trailer moving down the road over the years. You will want to start by tracing as much wiring as you can to look for anywhere the wiring may be damaged. You can verify the motor draw by using leads directly to a battery and an amp meter. If you do not have these tools most automotive repair shops can easily run the test which will let you know if the motor is bad. view full answer...
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