A brief history of the Jeep YJ:

• Development and Introduction: The Jeep YJ was developed in the early 1980s to replace the aging Jeep CJ series. The design for the YJ began in 1982 under the code name "YJ," which stood for "Yuppie Jeep" or "Young Jeep." Jeep aimed to modernize the design and make it more appealing to a broader audience, including younger buyers. The YJ was officially introduced in 1986 as a 1987 model.

• Design Changes: The Jeep YJ featured significant design changes compared to its predecessor, the CJ. It had a wider track and a rectangular headlight design, which was a departure from the traditional round headlights on previous Jeep models. The squared-off look of the YJ led some enthusiasts to nickname it the "square headlight Wrangler."

• Suspension and Chassis: The YJ retained the body-on-frame chassis and solid axles typical of Jeeps, which contributed to its excellent off-road capabilities. It had leaf spring suspension at the front and rear, providing good articulation and stability during off-road adventures.

• Engine Options: The YJ initially came with two engine options: a 2.5-liter four-cylinder engine and a 4.2-liter inline-six engine. In 1991, the 4.2-liter engine was replaced with a more fuel-efficient and powerful 4.0-liter inline-six engine, which became popular among Wrangler enthusiasts.

• Transmission and Drivetrain: The Jeep YJ offered manual and automatic transmission options. It also had a transfer case to switch between two-wheel drive and four-wheel drive, with low-range gearing for off-road use.

• Popularity and Legacy: The Jeep YJ was well-received by the public, and it helped establish the Wrangler as a recognizable and iconic vehicle. Enthusiasts appreciated its off-road capabilities, open-top design, and rugged nature.

• End of Production: The production of the YJ continued until 1995 when it was replaced by the Jeep Wrangler TJ model in 1997. The TJ brought additional refinements and improvements to the Wrangler line, but the YJ's legacy as the first Wrangler with the square headlights remains an essential part of its history.

• The Jeep YJ played a crucial role in continuing the Jeep's legacy as a capable and adventurous off-road vehicle while also expanding its appeal to a wider audience. It remains an important chapter in the evolution of the iconic Jeep Wrangler series.