Forum Discussion

petendoll's avatar
petendoll
Explorer
Aug 27, 2014

Tow plug wiring problem

I have a 2007 Ford Expedition. I hooked up a trailer for the first time and the 7pin plug is dead except for the brake controller and the tail lights and markers. I have no turn signals or brake lights. I checked the wires before they go into the plug and they are dead. Someone said there is a fuse for the trailer tow package but I don't find one. Anyone with an Expedition that can help me?

6 Replies

  • Old-Biscuit wrote:
    Per Owners Manual pg. 292-295..........LINK

    In the Power Distribution Box (in engine compartment) the following positions are used for trailer (position is on box cover)
    #5 40A trailer brakes
    #12 25A trailer park lamps (or #55 Relay)
    #13 30A trailer battery charge (or #56 Relay)
    #20 Relay trailer left turn signal
    #21 Relay trailer right turn signal
    #34 25A trailer stop lamp
    #63 15A trailer backup lamp


    Thank you. That is what I needed to know.
  • I have an 06 F150, there are two fuses for the stop/turn signals; I don't remember where.

    Doug
  • Per Owners Manual pg. 292-295..........LINK

    In the Power Distribution Box (in engine compartment) the following positions are used for trailer (position is on box cover)
    #5 40A trailer brakes
    #12 25A trailer park lamps (or #55 Relay)
    #13 30A trailer battery charge (or #56 Relay)
    #20 Relay trailer left turn signal
    #21 Relay trailer right turn signal
    #34 25A trailer stop lamp
    #63 15A trailer backup lamp
  • my f250 super duty had a relay for the tow package. I believe it plugged in somewhere but I don't remember where. call ford they might tell you.The relay was in a plastic bag in the glove comparment
    2 fuses trailer tow electric brake and battery charge
    2 relays. trailer tow backup lamp and battery charge
    found on E trailer. com good luck
  • Mandalay Parr wrote:
    Did you check the fuse layout in your operators manual?


    I did. There is a fuse for the towed vehicle battery charging circuit. It is good. Other than that nothing appears related to trailer light circuit. If there is a fuse it isn't in the fuse box.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,351 PostsLatest Activity: Jan 19, 2026