Jeep Headlight Upgrade Guide: JK vs JL vs JT

You know the moment. The trail day ran long, the sun dropped behind the trees an hour ago, and now you are driving home on lights that feel like two candles in jam jars.

Factory Jeep headlights, especially the older halogen units, are the weakest link on a lot of otherwise serious builds. The lift is done, the tires are right, the armor is on, and the front of the Jeep is still lighting the road like it is 2009. An LED headlight upgrade fixes that in one afternoon, and it changes the face of the Jeep at the same time.

But Jeep headlights are not one-size-fits-all, and this is where owners get tripped up. JK, JL, and JT Jeeps take different headlight sizes, and buying the wrong one is an expensive way to learn that. Here is the whole picture, generation by generation.

Step one: know which Jeep you actually have

Everything starts with your generation, because the generation decides the headlight bucket size.

JK and JKU, 2007-2018. The JK runs a 7-inch round headlight from the factory. Simple, classic, and the easiest upgrade of the three.

JL and JLU, 2018-present. The JL moved to a 9-inch factory headlight. Bigger bucket, different mounting, and the source of most fitment confusion.

Gladiator JT, 2020-present. The JT shares the JL's front end, which means a 9-inch factory headlight bucket, same as the JL.

One caution on the years: 2018 is an overlap year. The JK ran through 2018 and the JL started in 2018, so two different Jeeps can both be "a 2018 Wrangler" with different headlights. If yours is a 2018, go by the generation, not the year on the title.

The 9-inch bucket, explained

If you drive a JL or a JT, your factory bucket is 9 inches across. That gives you two honest routes.

Route one is a native 9-inch headlight that fills the bucket the way the factory light did. Route two is a 7-inch headlight seated in the bucket with adapter brackets. The 7-inch route is not a compromise or a hack. The bracket centers the smaller light in the bigger bucket, it mounts solid, and it opens up the much wider world of 7-inch round lights.

This is exactly how our Hex6 Pro works. It is a 7-inch headlight that fits all three generations. On a JK it bolts in as is, no bracket needed. On a JL or JT, the included adapter brackets seat it in the 9-inch factory bucket. One headlight, three generations, and the brackets come with it when your Jeep needs them.

What a real upgrade gets you: output, DRL, and turn signals

Brightness is the headline, but it is not the whole upgrade.

Output first. A modern LED headlight puts a crisp, white beam where the old halogens threw a dim yellow wash. The Hex6 Pro runs 20 high-output 6W LEDs per headlight for up to 6,000 lumens, at a 5700K color temperature that reads like daylight instead of candlelight. It also carries a built-in 120W work light for close-up brightness when you are aired down, loaded up, or working around the Jeep after dark.

Then there is the integration. Newer Jeeps expect a daytime running light and a turn signal in the headlight, and a good upgrade keeps those functions instead of deleting them. The Hex6 Pro has an amber DRL and an integrated turn signal built in, and it is plug and play on the factory H13 plug, so the Jeep's wiring stays factory. Four modes, all through the stock controls: turn signal, DRL, low beam, and high beam.

DOT approval, in plain English

Here is the part nobody explains until it becomes a problem at inspection time.

DOT approval means a headlight meets the US federal standard for headlights. A DOT approved headlight is road legal in all 50 states, and it means you never have to sweat a state inspection over the lights you installed. The E-Mark is Europe's certification, the same idea on the other side of the Atlantic.

Cheap import headlights often carry neither stamp, which is how owners end up swapping lights before an inspection or arguing with an inspector. The Hex6 Pro is DOT approved and E-Mark certified, both, and both are stated right on the product page. When you are comparing headlights, ask the question out loud: is it DOT approved? If the seller cannot answer plainly, that is your answer.

Our answer: the Hex6 Pro

The Hex6 Pro is the headlight we built this guide around, because it is the one that fits every Jeep in the conversation. Seven inch round, sold as a pair, $569.99. Up to 6,000 lumens per headlight, amber DRL, integrated turn signal, low and high beam, plus the built-in work light. The housing is IP67 sealed against dust and water and rated past 50,000 hours. It plugs into the factory H13 connector, the adapter brackets for JL and JT are included, and it is DOT and E-Mark certified. Like every Shoreline product, it is backed by our 2-year warranty.

Want color, or a native 9-inch? The rest of the lineup

The Hex6 Pro is the cross-generation answer, but it is not the only way to upgrade.

JK owners who want color up front can look at the 7-inch JK RGB headlights and the 7-inch JK RGB X Series, both built for the JK's native 7-inch bucket. JL and JT owners who want to fill the factory bucket completely can look at the 9-inch JL JT RGB headlights and the 9-inch RGB X Series. The Eclipse line tops the range, and the Eclipse Pure White 9-inch is the pick for a clean, bright, no-color look. Every option lives in the Pro Series Headlights collection, organized by generation so you can shop your Jeep first and style second.

Not sure which size your Jeep takes? Message us your year and model and we will point you at the exact fit. That is a better plan than guessing, and it is kind of our whole thing.

From Coast 2 Krawl we light it all.

FAQ

Q: Will a 7-inch headlight fit my JL or Gladiator JT?
A: Yes. JL and JT Jeeps run a 9-inch factory headlight bucket, and a 7-inch light like the Hex6 Pro seats in that bucket with adapter brackets, which are included with the Hex6 Pro when your Jeep needs them.

Q: Do I need brackets to install the Hex6 Pro on a JK?
A: No. JK and JKU models take the Hex6 Pro with no bracket needed. The brackets are for JL, JLU, and JT models.

Q: Are the Hex6 Pro headlights DOT approved?
A: Yes. The Hex6 Pro is DOT approved and E-Mark certified. DOT approval means it meets the federal headlight standard and is road legal in all 50 states.

Q: Is the Hex6 Pro plug and play?
A: Yes. It connects on the factory H13 plug, with the amber DRL and integrated turn signal built in, and runs turn signal, DRL, low beam, and high beam modes.