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post #1 of 9 Old 10-31-2011, 07:41 AM Thread Starter
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trailer plug problem

Ok guys i need your help. I went to hook up the trailer yesterday and when i plug in the trailer it was saying trailer disconnected and then after it was saying wiring fault on trailer. I know its not the trailer because it has worked fine on my truck and it worked fine on my stepdads dodge . Also it did the same on two other trailers. Any ideas what it could be? A fuse? Any help is appreciated.

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post #2 of 9 Old 10-31-2011, 07:46 AM
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You'll have to check your Owner's manual - I believe there are several fuses and perhaps some relays that are specific to the trailer connection.


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post #3 of 9 Old 10-31-2011, 07:49 AM Thread Starter
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Quote:
Originally Posted by SuperCrutyPS View Post
You'll have to check your Owner's manual - I believe there are several fuses and perhaps some relays that are specific to the trailer connection.
Yea i was looking at the manual. I am just not sure which one it might be listed as. Is there any way to check if a relay is bad? Does it sound like a fuse problem?

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h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #4 of 9 Old 10-31-2011, 02:04 PM Thread Starter
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well i got a prong to test the connectors. THe + connection lights up and the running lights light up. When i test with the left and right blinker and the brakes there is no power. Any ideas?

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #5 of 9 Old 10-31-2011, 08:25 PM
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blown fuses... my plug on my truck is all beat up and on occasion water gets in there and blows fuses... same thing, some things work, some things dont... Ford has separate fuses for trailer towing which is nice...

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post #6 of 9 Old 11-01-2011, 02:17 AM
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It could be blown fuses, most of them are in the fuse panel under the hood. (assuming its the '08 in your sig) If your fuses aren't blown take the connector apart it could be corroded . The plug on my '06 had green corrosion on the prongs inside the connector. I cleaned them up the best i could and put die electric grease all over the connectors. Haven't had a problem since.

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post #7 of 9 Old 11-01-2011, 10:52 AM
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I have had the same problem with my 2010....I just unplugged the cord and plugged it back in and that stopped the problem....I need to use some electrical grease.

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post #8 of 9 Old 11-08-2011, 09:25 PM
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I just noticed today that mine was saying trailer disconnected, went back to find out that the plug to the plug was loose.....the truck side, female, part of the plug is also plugged in to the harness behind it, it all looks like one piece but its not, may check this

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post #9 of 9 Old 11-23-2011, 01:14 AM
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yes there is a plug between the truck harness, and the actual receptacle on the rear bumper of the truck. therefore you have TWO places where you can have corrosion, that need to be checked and greased

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