If you are changing the headlight bulb on the driver's side you are in luck. Open the hood and go in from inside the engine compartment. The bulb housing is rotated in clockwise, so to remove you would turn counter clockwise. (the main headlight bulb is the outside one, just trace behind it, you will find the wires and housing). Once you have it out, you need to depress the clip that attaches it to the wires and remove. All fairly easy, and you can do it without any tools. If the bulb on the passengers side goes out, it's the same process, however you will have to remove the battery and possibly the horn if it is in your way. Then it's clear sailing!
twist and pull out
There are two bolts holding the headlight buckets in, you will need to remove them to get at the bulbs. The lens will come out and you will pull the bulbs out of the lens itself. They are hex head bolts, DO NOT TURN THE TORX SCREWS THEY ARE THE ADJUSTING POINTS FOR AIMING.
Remove the headlight assemblies and you will have access to the signal bulbs. See sources and related links below for bulb information.
Bulbs are replaced from rear of headlight. See answer to similar questions for how to do.
If you look in your owners manual there are step by step instructions on how to properly change the headlight bulbs in your truck.
you will probably have to loosen the complete light assembly so you can get you hand in back of the light to change the bulbs, once you can get to them unplug the wires to the bulb and then either pull or twist the bulb out.
Nicole
To change a headlight on a 1999 Acura TL open the hood and locate the bulbs which are plugged into the housings. Loosen the bulbs and pull them off. Replace them.
Before replacing the headlight bulbs on a 1997 Acura CL prop the hood open. Locate the headlight housing and remove the old bulbs. Install the new lights.
Open the hood. On top of the headlight assemblies, there's a curved metal rod. Pull that out, and you can pull the headlight assembly right out. From there, you turn the bulb ballasts counterclockwise and pull them out, and you can either replace the bulbs at that point, or the whole headlight assembly if necessary.
The headlight assembly (aka the headlight bucket) is removable by releasing the lock tabs behind the assembly. Once the assembly is wiggled out in the open you can easily replace the bulbs.
pull the two rods from the top of the light assembly after raising the hood, this allows you to swing the assembly out and put the new bulbs in