Questions regarding my truck and a trailer I just bought...

Discussion in 'Towing & Trailer Tech' started by wmkess, Feb 4, 2013.

  1. wmkess

    wmkess New Member

    Well I might just wire in the 7 blade and be done with it. I'm undecided.

    Thanks for the responses though. Now comes the hard part...actually wiring this up correctly. I'm pretty sure it's gonna be a tough task as I doubt all the wiring to the brakes is as it should be.
  2. SurrealOne

    SurrealOne Former Member 1000 Posts 100 Posts

    I agree with this 100%.
  3. dsfloyd

    dsfloyd New Member 1000 Posts 100 Posts

    This was my thought as well.
  4. steved

    steved Former Member 100 Posts

    Because it won't work...

    You're going from trailer to truck, not truck to trailer...he would need to make a custom adapter. All the adapters I have ever seen sold plug into a 7-way receptacle to give you a 4-way receptacle, he needs to go from a 7-way plug to a 4-way plug. You likely won't find a manufactured adapter because it would pose a safety issue by allowing someone to circumvent the need for electric brakes.
  5. E_HILLMAN

    E_HILLMAN New Member

  6. Crawdaddy

    Crawdaddy Moderator Staff Member Platinum Contributor 1000 Posts 100 Posts

    There's no good reason to put 2 trailer connectors on the trailer. The 6 or 7 way blade connector is the proper connector for that trailer, plain and simple. If something happened that involved the authorities or insurance and they found a 4 way on that trailer with trailer brakes on the axle, you're at fault for not using the brakes.
  7. The Heater

    The Heater New Member 100 Posts

    My truck had OEM wiring harness for brakes in a four pin set up for surge brakes, because my boat trailer has surge brakes, and my utility trailer is electric. I added an electric brake controller and therefore now have both plugs. But your situation is a little more complicated since you started with the 7 pin set up.

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