I installed these in a 2005 kenworth t800. neither light will burn. what am i missing?

These aren't usually plug and play. You need to find out which is the ground, low beam, high beam, and rearrange the pins as needed.

Do these include a daytime running light option?

You would have to wire your own relay to make that happen. They are a basic replacement for your normal headlight bulbs. Installed mine on a 1997 P30 RV chassis and what a difference. Really like them.

Is this fit for my 1995 chevy g van 4 piece light ?

If the headlight is a 4x6 then yes. They bolted right in my 1985 Chevrolet C30.

i have a 99 firebird formula it say the headlights are 4 x 6 will these work with that system

They will not work. 98-2002 Firebirds/Trans Am's use a special slightly smaller bulb size. These bulbs are technically 4.25" x 6.625" (4x6 for short) will fit any car that calls for bulbs with part numbers 4651/4656 (H4651/H4656 halogen part numbers). The 98-02 Firebird used H4701/H4703 bulbs which are actually 6.375" x 2.875". I have a 2000 Trans Am, I am eagerly waiting to see if someone makes 6.375" x 2.875" LED, the only place I know that makes some LED options is LMC Truck, 89-91 Chevy/GMC trucks including the Blazer, Suburban and pickups used the H4701/H4703 bulbs, but nothing comes close to what they are making for the 4x6 bulbs.

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🚛 Light Up Your Legacy with BESURE Brilliance!

UNIVERSAL FIT FOR ICONIC RIDES - Seamlessly replaces HID Xenon H4656/H4651/H4652/H4666/H6545, compatible with 99% of vehicles including Peterbilt, Kenworth, Freightliner, and classic models from 1955-1988.
BUILT TO LAST OVER 70 000 HOURS - Durable ABS housing with advanced heat dissipation ensures long-lasting performance and reliability on every journey.
EFFORTLESS UPGRADE IN 20 MINUTES - No decoders or complex mods needed—just plug & play for a quick, hassle-free installation even for beginners.
BRILLIANT ILLUMINATION ZERO GLARE - 6000 lumens high beam and 3500 lumens low beam deliver superior visibility with a precise cutoff line that keeps oncoming traffic safe.
DOT SAE CERTIFIED FOR STREET LEGALITY - Drive confidently with fully approved headlights that meet strict safety standards and come with all necessary adapters.

The BESURE 4x6 LED Headlights offer a powerful 6000LM high beam and 3500LM low beam with a sharp cutoff to prevent glare. Designed for universal fitment across classic and modern trucks including Peterbilt, Kenworth, and Freightliner, these DOT-approved headlights feature anti-flicker EMC technology and durable ABS housing for over 70,000 hours of use. Installation is quick and easy with plug & play design, making it the perfect upgrade for professionals seeking style, safety, and performance.

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Brand	BESURE
Color	Chrome
Specific Uses For Product	Head Lights
Vehicle Service Type	freightliner peterbilt kenworth oldsmobile
Year	1955
Special Feature	High Beam
Wattage	6E+1
Auto Part Position	Front
Lens Color	Clear
Lens Material	Abs
Item dimensions L x W x H	0.39 x 0.39 x 0.39 inches
Assembly Required	No
Automotive Fit Type	Universal Fit
Manufacturer	BESURE
OEM Part Number	[BS-LN-010L/06]
Item Weight	7.31 pounds
Product Dimensions	0.39 x 0.39 x 0.39 inches
Manufacturer Part Number	BS-LN-010L/06
Special Features	High Beam
Safety Rating	DOT Certified

4X6 LED Headlights Hi/Lo Beam H4656 H4651 H4652 H4666 H6545 Rectangular Headlight Compatible with Peterbilt 379 Kenworth T800 T600 Freightinger Ford Probe Ol-dsmobile - Chrome

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