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13 Posts
Discussion Starter #1
I have no power to the aux power pin on the 7 pin trailer harness. Key on or off, no matter! It should be on all the time the ignition is on, usually it is used to charge a trailer electric brake battery. That is the pin the trailer uses for interior lights. Any ideas?
 

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GSXR1000, Aprilia SXV550, Aprilia RSV4 Factory
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146 Posts
I have never used mine as a 7 pin. I just used the adapter and 4 pin. There is probably a fuse that needs to be installed before you use the connector as a 7 pin. I know that my truck came from the factory that way. I had to install the fuse to power up the power terminal in the 7 pin connector.
 

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09 Borrego LX
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5 Posts
I know I have had to wiggle the connecting cable really good sometimes in order to get a solid connection. You need to make sure it is inserted far enough for the latch cover lock to be over the plug all the way. Sometimes they don't go in real easy.
 
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