7-Way Trailer Wiring Recommendation for 2015 Mazda CX-5

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Question:

Hi, Im looking to purchase a wiring harness for my mazda cx-5 to tow an Aliner pop trailer which I believe has a 7-way connector. I cant find a 7-way wiring harness that matches the 2015 mazda cx-5. Do you have one available? Do you have any other advice? This will be our first trailer and this all new for us. Thanks and I look forward to hearing back from you.

asked by: Joseph R

1

Helpful Expert Reply:

We have a way you can install a 7-way on your 2015 Mazda CX-5 but not all vehicles have custom fit 7-ways made for them so you'd have to start with the more common 4-way like the part # C56011 which is custom fit for your vehicle. From there you'd need to convert it to a 7-way like what your trailer needs. If the trailer does not have brakes all you need is the # 37185 which plugs right into the 4-way and you'd be set.

If the trailer does have brakes you'd instead need the # ETBC7 which comes with additional components needed to wire in a brake controller like the very popular and great performing Brake EVN # TK63VR. This uses an inertia sensor to determine how hard to apply the trailer brakes based on how hard you hit the vehicle brakes.

expert reply by: Jameson C

1

Answer 1

There really are no limitations as to where you can install the Dutton-Lainson Hand Winch #DL15002 just as long as it isn't a vertical pull. It has a max capacity of 3/16" x 40' when it comes to cable so the best option we have is the…

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Answer 2

The charging circuit on a vehicle 7-way style connector, the one that would deliver a maintenance charge to the trailer battery while you tow, is completely separate from the 4-wire brake controller wiring. This trailer charging circuit is usually…

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Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 6

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 7

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

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Answer 8

Unfortunately it will not Bill but congrats on the car! There's been two generation changes with big redesigns on the Corolla so the older hitch isn't going to be transferable. To add a hitch to your 2025 Toyota Corolla LE, I recommend the…

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Answer 9

Hey Jason, welcome back! The 15" x 6" Dexstar Steel Mini Mod Trailer Wheel item #AM20537 will work if you have 2" or more clearance between the side wall of your current tire and your trailer's frame. This wheel is only going to be…

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7-Way Trailer Wiring Recommendation for 2015 Mazda CX-5

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