2005/2006 headlights on a 2003 tundra

I was wanting to get all white headlights on my 03, but I saw some for a 06 but what is the 3rd bulb for on the 06 headlights, and would they fit?

 

The tearduct light is the drl. I dont know about plugs, but they should 'fit' as long as you get AC lights for an AC truck, and DC lights for a DC truck. Pretty sure someone here has swapped '05-'06 lights onto an earlier truck.

 

3rs bulb down in the corner is "DTRL". I don't think they'll fit. I do know same year AC headlamps don't fit an '06 DC. I'd go with lights for your actual year and body style.

 

https://www.tundras.com/threads/gen-1-lights-thread.84551/#post-2131972

Read some of these see if they help.

 

Doesn't cover year interchange, DRLs, or some other things but there is some lighting and different-cab-types-parts-interchange info over here that may be helpful.

 

What even is the “dtrl” light for, like is it essential because I mean as long as I have my blinkers, dims and brights I’m chilling

 

Daytime running light. The importance of it existing is more about the wiring/circuitry than the operational function.

 

Ok thank you

 

legal requirement in some places (like Canada).