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7-way tow package connector...

Discussion in 'Towing' started by mvega1969, Sep 29, 2008.

  1. mvega1969

    mvega1969 [OP] Well-Known Member

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    Does any body knows if the seventh pin (auxiliar/back-up [reverse]), the one at the center is connected to "something" and pass through any signal to a trailer. Being straight, does this center pin is it connected to the back-up [reverse] signal on our Tacomas with OEM towing package?


    This one, marked as auxiliary or orange color:

    7-way Connector Distribution.JPG
     
  2. TicTacOma

    TicTacOma UnderWater Monopoly Champion

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    Anastatia Beaverhausen
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    I'm Thinking...Oh Yeah...An FJ
    It's all in my head at the moment...
    Get a test light, put the e-brake on and chock the wheels. Turn the key on and put the truck in reverse. Make sure the truck isn't running. If it's hooked up, the light will be on. You can then tap into the wire.
     
  3. mvega1969

    mvega1969 [OP] Well-Known Member

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    I will be doing this and I let you know, thanks!

    Regards.
     
  4. mvega1969

    mvega1969 [OP] Well-Known Member

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    I did use the test light and proceed to check the 7th point (center) on a 7-way towing package connector, it does pass the signal for back-up (reverse), with this if for some reason (as I) someone is in need of it, this can be used to place backup lights on a trailer that does not have it or on any towed vehicle/trailer. In order to do it you will need to match it with a 7-way trailer (female) connector and use the 7th contact point.

    Regards.
     
  5. dbkonkle

    dbkonkle Member

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    This reverse pin (on the flat 5 connector and 7 pin round connector) also locks out the brakes on newer surge brake equipped trailers to prevent the brakes from actuating while backing.

    Backup lights are a great idea though, trailers should come with them as standard equipment in my opinion.

    David
     
  6. mvega1969

    mvega1969 [OP] Well-Known Member

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    You always learn something new, I did not know that 5th pin on a 5-way flat connector was used for backup, great!

    I had installed a "manual" or switched reverse lights to a RV but I was always wondering how I can do it "automatically" when backing up with the truck, this is the way for a 5-way flat and 7-way round connectors.

    Regards.
     
  7. mvega1969

    mvega1969 [OP] Well-Known Member

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    Project done, now I have my extra backup lights (Tacoma) plus the RV has its own pair, connected via a relay where it gets the 12v from its battery and the backup (reverse) signal from the truck (via the 7-way connector). I blowed two fuses: Truck (ignition -short circuit-) and RV (installed fuse was 7.5a when it should be at least 20a -bases on relay-), but at the end everything worked as predicted -automatically-.
     
  8. dbkonkle

    dbkonkle Member

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    I should have mentioned that a relay would be a good idea, but you seem to have it under control. This will be one of those things that gets added to all the trailers I use frequently. . .if my truck ever shows up at the stealership.

    David
     
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