IS MY MOD LEGAL?

Underglow in Wisconsin

Vehicle type: Suv

Conditional

Underglow may not be used on public roads in Wisconsin. Only white or amber light may show to the front and only red to the rear, and flashing is banned — which makes most colored underglow unlawful while the vehicle is in motion.

Verified against primary sources · August 2026

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Frequently Asked Questions

Are underglow legal in Wisconsin?
Underglow may not be used on public roads in Wisconsin. Only white or amber light may show to the front and only red to the rear, and flashing is banned — which makes most colored underglow unlawful while the vehicle is in motion.
What are the underglow limits in Wisconsin?
Underglow may not be used on public roads in Wisconsin. Only white or amber light may show to the front and only red to the rear, and flashing is banned — which makes most colored underglow unlawful while the vehicle is in motion. For specific numeric limits and thresholds, see our full compliance report.
Are there exceptions for underglow in Wisconsin?
Yes, there may be exceptions and exemptions. Get the full details including medical exemptions and edge cases in our compliance report.

Street-legal underglow picks

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