Buying Guide
6 Best Aftermarket Trailer Brake Controller in 2026: A Practical RV Guide
Aftermarket trailer brake controllers and the harnesses that connect them: universal fit, Tekonsha-style replacements and Silverado adapters for RV towing.
By Hardcastle's RV Editors
10 min read6 products evaluated
Aftermarket here means a controller you add yourself, either to a truck that left the factory without one or to replace a worn unit. That puts the harness at least as high on the checklist as the controller, since a controller without the right connector is just a box.
The list mixes three controllers with three wiring parts and orders them by how complete the listing is for a do-it-yourself install. Two controllers are third-party copies of Tekonsha models and are labeled that way, and the harnesses are called out as accessories, not controllers.
Hardcastle’s RV field notes
The Rig Fit Check
A quick way to connect the shortlist to the space, workload and ownership details that matter after the box arrives.
- Start with the job
- REDARC Tow-Pro Liberty Electric Trailer Brake Controller leads this shortlist for Tandem trailers, branded unit. Use that fit as a reference point, then compare the alternatives against your own space and workload.
- Specs that separate the picks
- The first details to compare are Proportional, 1-2 axles, Replaces Tekonsha P3 90195, Replaces Tekonsha 90160. Confirm the exact model and included components before ordering.
- Trade-off to plan for
- Rated for 1-2 axles only
The Practical Shortlist
A road-tested-thinking look at 6 options, organized around the job each one suits best.
Best Overall
REDARC Tow-Pro Liberty Electric Trailer Brake Controller
Tandem trailers, branded unit
Our take Check price for REDARC Tow-Pro Liberty Electric Trailer Brake Controller (opens in a new tab)
Best P3-Style Pick
90195 Electric Proportional Trailer Brake Controller with LCD Display
Four-axle trailers
Our take Check price for 90195 Electric Proportional Trailer Brake Controller with LCD Display (opens in a new tab)
Best Primus IQ Copy
Kolasina 90160 Proportional Trailer Brake Controller for 1-3 axle
Primus IQ style on a budget
Our take Check price for Kolasina 90160 Proportional Trailer Brake Controller for 1-3 axle (opens in a new tab)
Best Universal Harness
Universal pig-tail brake controller wiring harness
REDARC Liberty installs
Our take Check price for Universal pig-tail brake controller wiring harness (opens in a new tab)
Best Budget Universal Harness
Oyviny Brake Control Pigtail Wiring Harness Fits for Tekonsha
Two-vehicle setups
Our take Check price for Oyviny Brake Control Pigtail Wiring Harness Fits for Tekonsha (opens in a new tab)
Best Silverado Harness
Oyviny 3016-P Brake Controller Wiring Adapter for 2014-2020 GM/Cadillac Escalade/GMC Sierra/Chevrolet Silverad
Listed GM trucks
Our take Check price for Oyviny 3016-P Brake Controller Wiring Adapter for 2014-2020 GM/Cadillac Escalade/GMC Sierra/Chevrolet Silverad (opens in a new tab)
Why Each Pick Made the Cut
Best Overall1 of 6
REDARC Tow-Pro Liberty Electric Trailer Brake Controller on Amazon (opens in a new tab)
REDARC Tow-Pro Liberty Electric Trailer Brake Controller is the better fit when tandem trailers, branded unit.
Best for
- Tandem trailers, branded unit
Why it made the shortlist
The intended use case is Tandem trailers, branded unit. The documented setup centers on proportional, 1-2 axles, remote dial head, 3 ft cable, two-year limited warranty.
What separates it on paper is brand-made unit with two-year limited warranty. Against the other 5 picks, the useful comparison starts with proportional, 1-2 axles and remote dial head, 3 ft cable. Those details show whether its configuration suits the job better than a neighboring recommendation.
Before committing, account for rated for 1-2 axles only. Measure the actual run from the hookup or outlet to where the gear will sit before choosing this length, and leave slack for uneven sites.
Key dimensions & specs
- Proportional, 1-2 axles
- Remote dial head, 3 ft cable
- Two-year limited warranty
Pros
- Brand-made unit with two-year limited warranty
- Compact dash dial blends into the cab
- Includes remote head, knob, bezel and cable
- Pairs with universal or vehicle-specific harnesses
Cons
- Rated for 1-2 axles only
- Harness is sold separately
Best P3-Style Pick2 of 6
90195 Electric Proportional Trailer Brake Controller with LCD Display on Amazon (opens in a new tab)
Choose 90195 Electric Proportional Trailer Brake Controller with LCD Display for covers up to four braking axles.
Best for
- Four-axle trailers
Why it made the shortlist
90195 Electric Proportional Trailer Brake Controller with LCD Display is positioned for Four-axle trailers. The documented setup centers on replaces Tekonsha P3 90195, up to four braking axles, no-trailer-brake alert.
The feature doing most of the work here is covers up to four braking axles. Against the other 5 picks, the useful comparison starts with replaces Tekonsha P3 90195 and up to four braking axles. Those details show whether its configuration suits the job better than a neighboring recommendation.
The practical constraint here is third-party copy, not made by Tekonsha. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- Replaces Tekonsha P3 90195
- Up to four braking axles
- No-trailer-brake alert
Pros
- Covers up to four braking axles
- LCD with multiple color options
- Alerts you to no-trailer-brake situations
- Plug port works with 2-plug adapters
Cons
- Third-party copy, not made by Tekonsha
- You must verify the part number match
Best Primus IQ Copy3 of 6
Kolasina 90160 Proportional Trailer Brake Controller for 1-3 axle on Amazon (opens in a new tab)
Kolasina 90160 Proportional Trailer Brake Controller for 1-3 axle makes the shortlist because snap-on quick-release plus screw-in bracket.
Best for
- Primus IQ style on a budget
Why it made the shortlist
This model is aimed at Primus IQ style on a budget. The documented setup centers on replaces Tekonsha 90160, 1-3 axles, 2-6 brakes, manual slider control.
The most useful documented advantage is snap-on quick-release plus screw-in bracket. Against the other 5 picks, the useful comparison starts with replaces Tekonsha 90160 and 1-3 axles, 2-6 brakes. Those details show whether its configuration suits the job better than a neighboring recommendation.
The main limitation to plan around is third-party copy, not a Tekonsha unit. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- Replaces Tekonsha 90160
- 1-3 axles, 2-6 brakes
- Manual slider control
Pros
- Snap-on quick-release plus screw-in bracket
- Self-diagnostics shown on LED display
- Manual slider for emergency braking
Cons
- Third-party copy, not a Tekonsha unit
- Limited to 1-3 axles
Best Universal Harness4 of 6
Universal pig-tail brake controller wiring harness on Amazon (opens in a new tab)
The strongest case for Universal pig-tail brake controller wiring harness is named by REDARC for the Liberty controller.
Best for
- REDARC Liberty installs
Why it made the shortlist
For REDARC Liberty installs, this is one of the more relevant configurations in the shortlist. The documented setup centers on universal pigtail, TPH-025, rEDARC brand, for REDARC Liberty.
Its case starts with named by REDARC for the Liberty controller. Against the other 5 picks, the useful comparison starts with universal pigtail, TPH-025 and rEDARC brand. Those details show whether its configuration suits the job better than a neighboring recommendation.
The trade-off worth checking first is accessory only, not a controller. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- Universal pigtail, TPH-025
- REDARC brand
- For REDARC Liberty
Pros
- Named by REDARC for the Liberty controller
- Suits vehicles without a factory plug
- Brand-matched to a controller on this list
- Universal rather than model-specific
Cons
- Accessory only, not a controller
- Listing gives almost no specifications
Best Budget Universal Harness5 of 6
Oyviny Brake Control Pigtail Wiring Harness Fits for Tekonsha on Amazon (opens in a new tab)
Oyviny Brake Control Pigtail Wiring Harness Fits for Tekonsha is the better fit when two-vehicle setups.
Best for
- Two-vehicle setups
Why it made the shortlist
The intended use case is Two-vehicle setups. The documented setup centers on 31-inch universal pigtail, 4-pin standard plug, pre-stripped color-coded wires.
What separates it on paper is lets one controller move between vehicles. Against the other 5 picks, the useful comparison starts with 31-inch universal pigtail and 4-pin standard plug. Those details show whether its configuration suits the job better than a neighboring recommendation.
Before committing, account for accessory only, not a controller. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- 31-inch universal pigtail
- 4-pin standard plug
- Pre-stripped color-coded wires
Pros
- Lets one controller move between vehicles
- Pre-stripped color-coded wires
- Names several Draw-Tite and Tekonsha models
Cons
- Accessory only, not a controller
- Needs splicing into the vehicle
Best Silverado Harness6 of 6
Oyviny 3016-P Brake Controller Wiring Adapter for 2014-2020 GM/Cadillac Escalade/GMC Sierra/Chevrolet Silverad on Amazon (opens in a new tab)
Choose Oyviny 3016-P Brake Controller Wiring Adapter for 2014-2020 GM/Cadillac Escalade/GMC Sierra/Chevrolet Silverad for plug-and-play on listed GM models.
Best for
- Listed GM trucks
Why it made the shortlist
Oyviny 3016-P Brake Controller Wiring Adapter for 2014-2020 GM/Cadillac Escalade/GMC Sierra/Chevrolet Silverad is positioned for Listed GM trucks. The documented setup centers on 2014-2020 GM adapter, 4-pin standard connector, no cutting or splicing.
The feature doing most of the work here is plug-and-play on listed GM models. Against the other 5 picks, the useful comparison starts with 2014-2020 GM adapter and 4-pin standard connector. Those details show whether its configuration suits the job better than a neighboring recommendation.
The practical constraint here is accessory only, not a controller. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- 2014-2020 GM adapter
- 4-pin standard connector
- No cutting or splicing
Pros
- Plug-and-play on listed GM models
- No cutting or splicing required
- Pure copper wire and tin-plated terminals
- Nylon sleeve protects the wiring
Cons
- Accessory only, not a controller
- Only useful on the listed GM years
How We Built This Shortlist
Each pick was assessed across 5 criteria weighted for real-world use.
- DIY install path
- We compared how complete each listing is for someone installing without a shop.
- Controller versus accessory
- We separated three controllers from three harnesses so readers do not buy the wrong part.
- Axle range
- We compared stated axle ratings, 1-2, 1-3 and up to four.
- Harness type
- We compared universal pigtails against vehicle-specific plug-in adapters.
- Brand honesty
- We marked Tekonsha-copy listings as third-party and kept REDARC as a branded unit.
What Matters Before You Choose an Aftermarket Trailer Brake Controller
Key buying criteria so you get the right fit the first time.
Controller or harness
A controller sets the braking, while a harness only connects it to your vehicle. Aftermarket installs usually need both, and listings for each look alike. Confirm the title includes the word controller before buying one.
Universal or vehicle-specific
A universal pigtail has bare wires and needs splicing, while a vehicle-specific adapter plugs into a factory connector. The second saves time but only fits listed years. Read the vehicle list before you buy.
Axle range
Listings here state 1-2, 1-3 or up to four axles. A controller rated for fewer axles than your trailer can overheat. Find the range in the title or first bullet.
Replacement label
Several listings say replacement for Tekonsha 90160 or P3 90195, which means they are third-party designs. Warranty and support come from the seller. Look for the words replacement or compatible with.
Mounting hardware
A controller needs a bracket and screws or a clip. Kolasina 90160 lists both a snap-on and a screw-in bracket, while REDARC Liberty includes a remote head and cable. Check what is in the box.
Warranty terms
The REDARC Liberty lists a two-year limited warranty, while third-party units offer replacement promises. These matter if a wire shorts. Read the support line before purchasing.
Match an Aftermarket Trailer Brake Controller to Your RV
By Install Type
| Your situation | Recommended pick | Why |
|---|---|---|
| Truck with no factory plug, want branded unit | REDARC Liberty | Pairs with the REDARC pigtail for a spliced install. |
| Need a plug-in for a listed GM truck | Oyviny GM Harness | Plug-and-play on the named GM years. |
| Moving one controller between two vehicles | Oyviny Pigtail | Universal pigtail lets you use a controller in either. |
| Using a REDARC controller with a universal harness | REDARC Pigtail | The part the REDARC listing names. |
Scroll sideways to see every column.
By Budget
| Budget | Recommended pick |
|---|---|
| $10 to $20 | Oyviny GM Harness or Oyviny Pigtail |
| $30 to $70 | REDARC Pigtail or Kolasina 90160 |
| $80 to $140 | Orceed 90195 or REDARC Liberty |
Branded vs Third-Party Copy
- Branded
- Made and supported by the brand, but often rated for fewer axles. REDARC Liberty is the branded controller here.
- Third-party copy
- Often cheaper with more axles, but support is from the seller. Orceed 90195 and Kolasina 90160 are in this group.
Choose REDARC Liberty for a one or two axle trailer, and Orceed 90195 if you need four axles.
By Axle Count
| Recommended pick | Recommended pick |
|---|---|
| Single or tandem, branded | REDARC Liberty |
| Up to three axles, Primus IQ style | Kolasina 90160 |
| Up to four axles | Orceed 90195 |
| Adding a harness to any of these | Oyviny Pigtail |
For Adding a Controller to a Truck With None Specifically
- Look for
- A harness that matches your truck's connector, as with Oyviny GM Harness, or a universal pigtail like REDARC Pigtail.
- In this comparison
- Oyviny GM Harness plugs in on listed GM years, while REDARC Pigtail and Oyviny Pigtail suit vehicles that have no factory plug.
When to Spend More
- Spend more if
- Spend more on REDARC Liberty if you want a brand-made unit with a two-year warranty over the third-party Kolasina 90160.
- Save if
- Save with Kolasina 90160 plus Oyviny Pigtail if you tow a tandem and can handle splicing.
Before You Bring One Home
Do aftermarket controllers work with any truck?
Only with the right harness. A plug-in adapter like Oyviny GM Harness names specific years, while a pigtail works on any vehicle with spliced wiring.
What is the biggest aftermarket mistake?
Buying a harness without a controller, or the reverse. REDARC Pigtail and Oyviny Pigtail are wiring only.
Is the branded unit worth more?
If you tow a one or two axle trailer and want a warranty, REDARC Liberty is sound. For three or four axles, third-party units cover more.
How do I install one?
Mount the controller, connect the harness, and set gain on a dry, level road until the trailer brakes firmly without locking.
Do I need to remove the factory controller?
If your truck has a factory unit, you may not need an aftermarket one at all. Check before buying.
Bottom Line
Best overall: REDARC Tow-Pro Liberty Electric Trailer Brake Controller — best overall pick in this roundup. See the full verdicts above for every pick, with pros, cons and who each one suits.
Browse all aftermarket trailer brake controller on Amazon — Prime-eligible options with current pricing.