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Failed trailer connection for 7 pin connector 2018 F150

2015 - 2019 F-150

Failed trailer connection for 7 pin connector 2018 F150

 
  #1  
Old 01-15-2019, 01:07 PM
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Failed trailer connection for 7 pin connector 2018 F150

Hello: I have borrowed my friend's trailer that has a 7 pin connector. I do not have a brake controller but I do have the pre-wired 7 pin connector on the back of my truck. I hooked up the trailer and there are no lights at all and the dash indicator shows that there is no trailer connected. Have I missed something simple here? I know the lights work on the trailer.
 
  #2  
Old 01-15-2019, 02:10 PM
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Check relays and fuses. Without a factory brake controller they may not be installed.
 
  #3  
Old 01-15-2019, 02:12 PM
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I checked all the relays and fuses; all are installed
 
  #4  
Old 01-15-2019, 02:16 PM
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the 7 pin needs a fuse to be added IIRC
the TBC needs to be programmed to the vehicle if added


do you know which wires you have or dont have power on?
 
  #5  
Old 01-15-2019, 02:38 PM
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I think I will try to adapt to the 4 pin connector on the truck; all I need is brakes
 
  #6  
Old 01-15-2019, 02:46 PM
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I don't believe the 4 pin wiring is capable of supporting the voltage load of running electrical brakes
 
  #7  
Old 01-15-2019, 04:40 PM
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4 pin only gives you lights, not brakes. If you have all relays and fuses installed, even without a TBC you should have lights through the 7 pin.
 

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