LED lighting kits are an easy upgrade, but "it looks good" and "it's legal to drive with" are two different questions. Rules vary by state, but a few patterns hold true almost everywhere.
Interior lighting
Ambient interior LED kits (footwells, under-seat strips) are broadly legal in most states since they're not visible from outside the vehicle or aimed at other drivers. The practical limit is usually about not creating glare that distracts the driver — avoid pointing strips directly at the windshield or mirrors.
Exterior and underglow lighting
This is where rules get specific. Many states restrict certain colors on the exterior entirely — red and blue exterior lighting is restricted or banned in most U.S. states since those colors are reserved for emergency vehicles. Underglow kits often default to a wide color range in the app, but sticking to white, amber, or a state-permitted color for road use is the safer default.
What tends to get flagged
- Any exterior light visible from the front that isn't white or amber
- Flashing or strobing modes used while driving on public roads (usually fine parked, at a show, or off-road)
- Lighting aimed to shine onto the road surface ahead of the vehicle beyond factory headlight placement
The practical approach
Check your specific state's vehicle lighting code before installing anything exterior-facing — it's a short search, and the rules genuinely differ enough between states that a general rule of thumb isn't reliable. Interior kits are a safer bet if you'd rather skip the research entirely.
If you do install exterior lighting, keep the controller easily reachable — being able to switch modes or turn it off quickly matters more than most buyers expect, especially near law enforcement.