Most Economical 7-Way and Brake Controller for 2005 Volvo XC90

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Question:

What would be the cheapest 7 prong wiring setup for a 2005 Volvo XC90 v8 engine awd I would need a brake controller and 7 way plug for my trailer Thank you

asked by: Steve

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Expert Reply:

The most economical option to add a 7-way and brake controller to your 2005 Volvo XC90 is going to take a number of parts, starting with a 4-way, the T-Connector Vehicle Wiring Harness # C56045. A 4-way is needed because it will allow you to then install a 7-way adapter; the 4-way will be what allows your trailer's turn signals to function.

From there you will need to use the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation # ETBC7L, which will give you the 7-way and other necessary components to add a brake controller.

Your 2005 Volvo XC90 is a bit different than most vehicles in that in order to hard wire a brake controller you would need to take it to your Volvo dealer in order for them to install it because it takes a professional to locate the wiring for the stoplight switch.

Thankfully you can avoid that cost by installing the aforementioned # ETBC7L and using the Curt Echo Mobile Trailer Brake Controller # C51180.

This brake controller is wireless and you simply use your smartphone in order to set up the system and monitor your trailer brakes. There is no in-cab unit as the Echo just plugs into the 7-way; this is the easiest brake controller on the market to use and will be the most cost-effective option considering a hard wire will require a visit to your Volvo dealer and the Echo is very easy to utilize on multiple vehicles. So even if you want to use it on a different car down the road you can;

I have added links to video reviews for you to take a look at as well.

expert reply by: Kyle S

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Answer 1

I will be happy to help. There are a couple of ways you can add a 7-Way trailer connector to your 2007 Volvo XC90. If you just want the lights to function on the trailer then you can use #37185. Your 4-Way will plug into this adapter and then you…

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Answer 2

To install a 7-Way harness on your 2023 Volvo XC90, you will need two separate wiring harnesses because they don't make just one that'll do the job. The first harness you'll need is the Curt Vehicle Wiring Harness item #C59236. This is a…

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Answer 3

So there are a couple of possible issues here, though just to answer your question about larger brakes, you do need to stick with 10 inch brakes as 12 inch brakes will be too large. Based on my research, your Forest River Flagstaff E-Pro E20BHS. The…

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Answer 4

You won't need to cut the bumper fascia to install a 7-way. We used a #18136 no-drill bracket that attaches to the hitch crossbar using a pipe clamp. Since the Curt #C53HR hitch crossbar is concealed behind the bumper, the #18136 bracket can be…

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Answer 5

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 6

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 7

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 8

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 9

Hey Ron, congratulations on the new trailer! I have a Jay Feather myself and love it. You're definitely off to a great start with a weight distribution hitch, it will make a world of difference towing that trailer with your F-150. The Weigh Safe…

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Answer 10

It sounds like you may already have a 4 way connector on your vehicle, which is half of the battle. In order to operate the Curt Echo Mobile Wireless Brake Controller #C51180 you will need an almost fully functional 7 way connector; using something…

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Answer 11

There is only one difference between the Curt Trailer Hitch Receiver #C13176 and etrailer Trailer Hitch Receiver #e98909 that fit your 2020 Chevrolet Colorado, which is the finish. The Curt trailer hitch has a glossy black finish while the etrailer…

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Answer 12

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Most Economical 7-Way and Brake Controller for 2005 Volvo XC90

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