IS MY MOD LEGAL?

Light Bars & LED Lighting in New Mexico

Conditional

New Mexico permits only one auxiliary driving lamp, which must be switched off within 500 feet of approaching vehicles. No cover is required, but a multi-lamp bar falls outside the permitted category.

Verified against primary sources · August 2026

What the law says

Contrary to widely repeated advice, no cover is required in this state — the rule is simply that the lamps are off on the highway. Mounting a light bar is legal everywhere; what states regulate is using it on public roads, and the usual constraint is a mounting-height ceiling plus a per-type lamp count.

Specific Limits

Use rule
the auxiliary driving lamp must be off within 500 ft of approaching vehicles
Max lamps
2 spot lamps, 2 fog lamps, and only ONE auxiliary driving lamp (16-42 in)
Cover required
No

Statute

NMSA 1978, §§ 66-3-827, 66-3-835

Read the statute →

Frequently Asked Questions

Are light bars & led lighting legal in New Mexico?
New Mexico permits only one auxiliary driving lamp, which must be switched off within 500 feet of approaching vehicles. No cover is required, but a multi-lamp bar falls outside the permitted category.
What are the exact light bars & led lighting limits in New Mexico?
Use rule: the auxiliary driving lamp must be off within 500 ft of approaching vehicles. Max lamps: 2 spot lamps, 2 fog lamps, and only ONE auxiliary driving lamp (16-42 in). Cover required: No. Source: NMSA 1978, §§ 66-3-827, 66-3-835.

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