Arizona - see state code, Title 28, Chapter 3, Article 16

California - see state code, Division 12, Chapter 2

Connecticut - see Sec. 14-96a thru 14-96aa and Sec. 14-137

Florida - see General Law 2000-313, Sections 316.220 thru 316.237

Georgia - see state code in Sec. 40-8-1 thru 40-8-220

Idaho - see state code

Illinois - see state code

Indiana - see state code, chapter 6

Iowa - see chapter 321.384 through 321.429

Kansas - see state code, Chapter 8, Article 17, Sections 8-1701 thru 8-1760.

Maryland - motor vehicle inspection requirements.

Michigan - see state code, Act 51.

Missouri - see Chapter 307, Vehicle Equipment Regulations.

Nevada - See Section NRS 484.541 through 484.591.  (Thanks Mr. Thompson!)

New Jersey - see state code, Title 39, Sections 39:3-46 thru 39:3-65.  In particular, 39:3-47c states:  "No person shall alter the equipment or performance of equipment of any vehicle which has been approved at an official inspection station designated by the commissioner with intent to defeat the purpose of such inspection, and no person shall drive or use any vehicle with equipment so altered."

New York - see state code, Chapter 71, Title III, Article 9.

North Carolina - see Chapter 20, sections §20-129 thru §20-134 (be warned, this document is huge and takes forever to load!)

North Dakota - Please note Section 39-21-29 concerning the sale and use of non-OEM lighting equipment.

Ohio - See state Administrative Code, Title 4501, Chapter 4501-15.

Oklahoma - see state code, sections §47-12-201 thru §47-12-231.

Oregon - adopted FMVSS No. 108

Pennsylvania - see state code, Title 67, Chapter 153, Section 153.4

Rhode Island -  see state code

South Carolina - see state code, Title 56, sections 56-5-4480 thru 56-5-4840.  In particular, 56-5-4840 states:  "It shall be unlawful for any person to sell, offer for sale or use any device or equipment which tends to change the original design or performance of any head lamps or any other lamps or reflectors required by law to be attached to motor vehicles, trailers or semitrailers unless the equipment or device has been approved by the director of the department."

Texas - adopts FMVSS No. 108.  They also have a page that deals with aftermarket lighting products (click here).

Utah - adopts FMVSS No. 108.  Also see Utah State Code, in particular, sections 41-6-141, and 41-6-142

Virginia - see state code

Washington State - adopts FMVSS No. 108 for aftermarket lighting devices.

Wisconsin - see state code