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Old 10-12-2011, 06:52 PM   #1
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Power to tt with 7 pin

Should i have power to my tt rockwood 8313ss when it is hooked up to my truck with the 7 pin trailer harness ? I took the battery out does that make a difference? 2001 f150 5.4 or is it my truck wiring? It is a older truck help.

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Old 10-12-2011, 07:39 PM   #2
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Nope! Not without a battery. Your pigtail will barely supply more than a trickle charge to the battery.

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Old 10-12-2011, 09:52 PM   #3
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On a 2001 F150, in order to get power to the trailer, the key must be in the "on" position. There is a relay, under the hood fuse box, that supplies power when the key is on.
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Old 10-13-2011, 07:16 AM   #4
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Originally Posted by windrider View Post
On a 2001 F150....There is a relay, under the hood fuse box, that supplies power when the key is on.
Check that the relay is actually installed. I have had two F-150s, a 1997 and a 2008, both new from factory. In both trucks that relay (and a couple of misc cables) came in a plastic bag in the glove box!
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Old 10-13-2011, 09:40 AM   #5
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normally that relay does not come in the fuse/relay center
even though it has tow package .
you have to install it !
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