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Expert Answers about Mercury Mountaineer


  • Where Does a Brake Controller Plug Into on a 2005 Mercury Mountaineer
  • On your 2005 Mercury Mountaineer, if it came with a factory installed 7-Way trailer connector then the brake controller port will be located behind the glove compartment. If it came with a factory 4-Way then the brake controller will need to be hardwired in using # ETBC7. For a brake controller I recommend the P2 # 90885 because its easy to set up and use. For a wiring harness the correct one is # 3035-P.
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  • What Ignition-Controlled Circuit in 2001 Mercury Mountaineer Can Trigger Battery Isolation Solenoid
  • The simplest method to gain access to an ignition-controlled power circuit in your 2001 Mercury Mountaineer is to install a fuse tap kit, such as Firestone part # F2526, in the power distribution box within the engine compartment. This will avoid the need to splice into your Mountaineer wiring. I have linked a video (for a different product) that includes the fuse tap installation process; please review the video starting from the 3:30 point. Some vehicles, such as the vehicle shown in...
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  • Transmission Cooler Radiator Adapter Kit for 2007 Mercury Mountaineer 4.0 V6
  • The Derale Radiator Adapter kit # D13025 is intended to connect to 5/8-inch fittings in the radiator of your 2007 Mountaineer. These parts then allow hose connection to the supplementary cooler you're installing, such as Series 8000 Plate-Fin Transmission Cooler # D13504. Please refer to the linked review video that shows this cooler installed. Please send along a photo of the harness end you are referring to and we can assist further.
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  • How to Test a 4-Way Trailer Wiring Harness Plug
  • You are testing correctly for the left and right turn signals, but the 3rd female plug you are testing is the taillight circuit. If you turn on the running lights you should get 12 volt power at the connection that the brown wire runs into. To test the brake lights at the trailer connector you need to apply the brakes and test the connectors that the green and yellow wires go into. These are the same connections that you tested for the turn signals. Trailer wiring combines the left turn/brake...
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  • Installing Fuse Holder on Battery in Trailer Wiring Harness 118345 for 2000 Mercury Mountaineer
  • The yellow fuse holder starts out as a closed loop. You will need to cut it in half. One end connects to the power wire you ran from the wiring harness. The other end will connect to the positive battery terminal. Inserting the fuse should be the last step. Take a look at the video I have linked at about the 3:40 mark that shows our installer putting in the fuse holder. I have included some additional links that will help with installation.
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  • Locating the Brake and 12 Volt Power Wires on a 2008 Mercury Mountaineer With Factory Tow Package
  • If there is power running to your brake controller, then brake and 12 volt power wire are most likely ran to the rear of your 2008 Mercury Mountaineer. If you follow the wires from the 4 way flat connector on your vehicle, then they should lead to a connection point. You will see 7 wires coming from the front of the vehicle into one side and only 4 wires coming out of this connection point for your 4 way flat connector. If you have this connection point, then you can pull back the plastic...
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  • Wiring the Hopkins Endurance Multi-Tow Trailer Connector # HM48470 on a 2001 Mercury Mountaineer
  • If the black wire on your 2001 Mercury Mountaineer is the 12V power wire from the vehicles battery you will want to connect that wire to the terminal at the eleven oclock position on the back of the Hopkins Endurance Multi-Tow Trailer Connector, part # HM48470. When wiring the Hopkins connector to your vehicle I would recommend to use a circuit tester like the Quickee Tester, # 3808 to test the functions of the wires and wire the connector by function and not just color. I am including...
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  • 2002 Mercury Mountaineer Brake Controller Port Location and Install Harness
  • The Ford Explorer and Mercury Mountaineer have 6-pin connectors behind the glove box on the passenger's side that you would use for the installation of a brake controller with the # 3035-P. I attached an install video that shows where it is as well.
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  • Where Does Hopkins Trailer Wiring Harness HM40915 Plug in on a 1999 Mercury Mountaineer
  • On 1999 Mercury Mountaineers that came with a factory tow package the connector you need will be the one on the passenger's side of the vehicle. Of course if it doesn't work you can try the other one you found. Wiring harness # HM40915 and ones like are meant as replacements for the factory trailer connector on models that have the factory tow package. If your Mountaineer did not come with the factory tow package you will need a different harness, # 118345.
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  • How Sturdy Is The Mount On The MaxxTow Off-Road Driving Lights?
  • The mount on the MaxxTow Off-Road Driving Lights # MT80637-2 itself is very sturdy. It is intended/designed for off-road driving conditions where the idea is durability. These lights can mount well on a snow plow as well and are often used for that application. The housing is powder coated for durability to protect the metal from the elements. .
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  • How to Install a Brake Controller on a 2008 Mercury Mountaineer
  • On your 2008 Mercury Mountaineer there should be a wiring harness that is attached to the 4-way wiring near the rear of your vehicle that has the brake controller wiring. This is the wiring that you would connect the Adapter 4 Pole to 7 Pole # 37185 to. You would plug your 4-way into the # 37185 and then wire the brake controller output circuit to the blue wire, the auxiliary 12 volt power to the black wire, ground the white wire, and then run the purple to a reverse lockout circuit if...
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