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How to Buy a Trailer Brake Controller Without Interest

How to · Auto

How to Buy a Trailer Brake Controller Without Interest

Upgrade your towing setup before the spring rush by spreading the $200 cost over 18 months.

VoAtlas editorial Updated · 3 min read
Typical cost $200 before anything else
Across the 0% window $11.11/mo 18 months, no interest

How we got that: $200 spread evenly across the 18-month introductory window on the Citi Simplicity® Credit Card. Checked · at the bank Carry a balance past the window and the standard APR applies to what is left.

Owning a tow vehicle means constant small expenses that keep the big ones at bay. Between fuel, tires, and hitch gear, the cost to run a rig is usually higher than the sticker price suggests. Prices for aftermarket parts are softest in the dead of winter before the camping season starts in March.

Negotiate any shop labor for the installation as a flat fee separately from the parts. While you should not finance a whole car on a card, using a window for a $200 extra like a brake controller makes sense. It lets you get the safety tech you need without hitting your monthly budget all at once.

The 0% for 18 months on purchases and balance transfers from date of account opening is a firm window, not a permanent discount. If you still have a balance when those 18 months end, the remaining amount will start accruing interest at the standard variable rate immediately.

The steps

  1. 01

    Choose proportional tech

    Look for a proportional controller rather than a time-delayed model. These units sense how fast the truck is slowing and apply the same pressure to the trailer. It is a smoother experience and reduces wear on your vehicle brakes.

  2. 02

    Shop the winter sales

    Buy your hardware in January or February. Retailers often discount towing accessories before the spring demand peaks. You can usually find the best units for around $200 during this window.

  3. 03

    Use the eighteen month window

    Put the purchase on the Citi Simplicity® Credit Card (Citi). It offers 0% for 18 months on purchases and balance transfers from date of account opening. If you spend $200, you only need to pay $11.11 a month to finish before the rate changes.

  4. 04

    Get a custom harness

    Do not cut your truck's factory wires if you can avoid it. Buy a vehicle-specific wiring harness for about $20. This makes the installation a simple plug-and-play job that you can do in your driveway.

  5. 05

    Test on a flat lot

    Find an empty parking lot to calibrate the gain before your first trip. You want the trailer to provide a firm tug without locking the wheels. Setting this early prevents stress when you are finally on the highway.

  6. 06

    Check the card terms before you commit

    Every figure we publish for the Citi Simplicity® Credit Card carries the date a person verified it against Citi and a link to where they checked. Intro windows and APRs change without notice, so confirm the current terms before applying.

    See Citi Simplicity® Credit Card terms →

Common questions

Why should I upgrade my factory controller?

Many factory units are basic and do not offer the fine-tuning of high-end aftermarket models. An upgrade gives you better control over different trailer weights and road conditions.

Is it hard to install a brake controller?

If your vehicle has a tow package, it is usually very easy. You plug the harness into a port under the dash and mount the controller with a few screws.

What happens if I miss a monthly payment?

Even during a 0% interest period, you are required to make the minimum monthly payments. Missing one can result in late fees and might cause you to lose the promotional interest rate.

Will a $200 controller work for a triple-axle trailer?

Most mid-range controllers can handle up to three or four axles. Always check the specific product manual to ensure it supports the number of brakes on your trailer.