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Old 12-19-2012, 02:56 PM
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Trailer Lights

I have a 2011 Dodge Journey with a 4 pin trailer hook up. When plugged in I can,t get any running lights but every thing else works. If the trailer is hooked to 150 Ford pickup or a GMC Envoy everthing works. Dealership checked and said wiring was ok so it must be the trailer yet the other vehicles work. Any ideas??? GOWSER

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Old 12-19-2012, 04:24 PM
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Most modern trucks have separate fuses for the trailer light circuits. I would find and check them if you haven't already.

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Old 12-19-2012, 04:39 PM
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When you say 'running lights' what do you mean? Just the corner clearance lights or clearance lights AND tail lights.

The obvious place to start is with a volt meter to see if you have voltage at the 4 pin connector on your car. If no voltage, then work forward.
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Old 12-19-2012, 05:30 PM
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Make sure you are grounded

After checking with a voltmeter to verify that you have power, verify that you have ground as well. If the trailer hitch is properly lubricated, it won't serve as a sufficient ground to the tow vehicle.

Dennis W. Parks
Author of automotive how-to books
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Old 12-19-2012, 07:54 PM
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You can use a regular voltmeter, or many auto parts stores sell a small tester that plugs into the vehicle to verify trailer lights. Its just the male side of the plug with some small LEDs on it, so its not very expensive.

This is one tester sold by Advance Auto Parts: Connector Tester, 4-Way Flat by Curt (part#I-25P) / Trailer & Towing

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