3J's Auto Body · Signal Hill, CA · Professionally Installed

Tow More.
Worry Less.

Trailer hitches, ball mounts, wiring harnesses, brake controllers, and weight distribution — professionally installed right here in Signal Hill. B&W Hitches dealer. We spec it, install it, and torque-test it ourselves.

Get a Free Quote Call (562) 424-6744
Gooseneck & 5th Wheel B&W Hitches Wiring & Brake Controllers Class I – V Hitches
Featured Brand
B&W Hitches
What We Install

Trailer Hitches

Class I through Class V receiver hitches for every truck, SUV, and car. Vehicle-specific — bolts on with no drilling on most applications.

Ball Mounts

Fixed and adjustable ball mounts, hitch balls, and pins for all tow ratings. We'll match the right drop and rise to your setup.

Wiring Harnesses

Plug-and-play T-One connectors and custom 4-pin and 7-pin wiring for your trailer lights — installed clean and routed right.

Brake Controllers

Trailer brake controllers for electric brake trailers — required by law in most states over a certain tow weight. We handle the wiring and installation.

Our Process

How We Install It.

Every hitch job at 3J's goes through the same three steps — no shortcuts, no guessing. We spec the right hardware for your vehicle and tow rating, install it to torque spec, and test it before you leave the lot.

Step 01

We Spec It

We confirm your vehicle's tow rating, hitch class, and exactly what you're towing — then match the right hitch, ball mount, and wiring for the job.

Step 02

We Install It

Hardware goes on using factory mounting points on most applications. Wiring is routed clean and zip-tied — no exposed wires, no shortcuts.

Step 03

We Test It

Every bolt is torqued to spec and every trailer light and brake connection is tested before you tow away. Done right, the first time.

Premium Hitches

B&W Hitches.

When the job gets serious, B&W is the go-to. Built in Humboldt, Kansas and precision-engineered for heavy-duty towing applications — gooseneck, fifth wheel, and turnoverball hitches for trucks that haul every day.

B&W products are designed, tested, and manufactured in the USA. Known for their signature chrome finish, precision fit, and best-in-class tow ratings. We install them and stand behind them.

  • Gooseneck & fifth wheel hitches
  • Turnoverball designs for versatility
  • Chrome and powder-coat finishes
  • Made in the USA
  • Precision-engineered for your truck
Get a B&W Quote
B&W Hitches heavy duty trailer hitch
B&W gooseneck hitch
B&W fifth wheel hitch

Complete the Setup

Everything to Tow Right.

A hitch alone doesn't make a towing setup. We install the full package — wiring, brake control, weight distribution — all in one visit.

Wiring
Trailer Wiring
Plug-and-play T-One connectors and 4-pin/7-pin custom harnesses for all major truck and SUV applications. Installed clean — no hacking into factory wiring.
Brakes
Brake Controllers
Proportional and time-delayed brake controllers for trailers with electric brakes. Required in most states for trailers over 3,000 lbs. We wire it right the first time.
B&W Continuum weight distribution hitch
B&W
Weight Distribution
Weight distribution systems level out heavy tongue weight loads and reduce sway — essential for towing large campers, horse trailers, and heavy equipment.

Why Come to Us

Done Right.
The First Time.

Proper Torque Specs

A hitch under-torqued can shift or fail under load. We install everything to manufacturer torque specs — because when you're towing 10,000 lbs, the bolts need to be right.

Clean Wiring Every Time

We route wiring harnesses correctly, zip-tie everything clean, and make sure your trailer lights work before you leave the lot. No exposed wires. No DIY headaches down the road.

We Sell & Install

One stop. We stock B&W and source the right hitch and hardware for your vehicle, spec the right class, and install it the same day in most cases.

Ready to Tow?

Get a free quote online or call us. We'll spec the right setup for your truck and what you're towing — often same-week installation.

Get a Free Quote Call (562) 424-6744

Common Questions

Got Questions?

Most trailer hitch installs take 1–2 hours at 3J's Auto Body. We can do the hitch and wiring harness in the same visit so you leave fully ready to tow.
Most hitches are vehicle-specific and bolt on using your existing factory holes. No drilling required on most applications. We'll confirm fitment for your exact vehicle before we start.
Class I–II for lighter loads like bike racks and small trailers. Class III–V for boats, campers, and heavy equipment. Call us at (562) 424-6744 and we'll spec the right setup based on your vehicle's tow rating and what you're hauling.
Yes — we install the full towing package. Hitch, ball mount, and wiring harness in one visit. We carry plug-and-play T-One connectors for most trucks and SUVs.
B&W is the premium choice for heavy-duty towing — gooseneck, fifth wheel, and turnoverball hitches built in the USA with best-in-class tow ratings. We stock B&W and install it ourselves, from spec to torque-test.
Yes — we install trailer brake controllers for trailers with electric brakes. Most states require a brake controller when towing trailers over a certain weight. We wire it correctly and make sure your setup is legal and safe before you leave.