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Old 05-16-2015, 05:04 PM   #1
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Question Lost connection

I have an old horse trailer that doesn't seem to get power to the brake lights. Is there a way to check that the connnector on my truck is actually putting out power?
I realize that the likely culprit is the plug on the trailer(it is somewhat corroded) but I would also like to eliminate the possibility that the problem may be with my truck.
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Old 05-16-2015, 06:54 PM   #2
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You could hook to a known good trailer. You could have someone test it with a multimeter. If 4-prong you could go to walmart or elsewhere and buy a 4-pin tester for $5.

I have 4 and 7pin testers I have with me always.
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Old 05-17-2015, 11:05 AM   #3
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A 12 volt test light will work for you. Cheap and you will find a use for it later in life. I use mine a lot on problems like this.
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Old 05-17-2015, 11:35 AM   #4
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X2. I forgot about test light, good call.
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Old 05-18-2015, 06:34 PM   #5
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Tekonsha 6562 7-Way Blade Tester and Trailer Emulator with LED Display

Click the image to open in full size.
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