Headlight change how do you change the headlight on my ascender? I can't find the manual right now, but I don't want to be pulled over for it not working.

You change the bulbs from the back of the composite headlight assembly. Open the hood, turn the bulb connector counterclockwise-about a quarter turn, and pull connector and bulb out. Take old bulb out, put new on on-don't touch the bulb glass with your fingers, body oil may shorten bulb life.

Since these lights will work auto or manual is there a relay that might be bad. You mean these light's won't work auto or manual ????
Did you check the TAIL LAMP LIC LAMP fuse 15 amp . ?
Located in the right I/P fuse panel open passenger door plastic panel end of the I/P pull ,fuse box behind . This fuse takes care of the thing's your having problems with

Your grille and chrome bar are held to your truck with eight clips. You can see the top clips if you look. First VERY GENTLY!!! start pulling your grille until you start popping those clips out. Keep an eye on your chrome bar, because it is clipped into the headlight. GENTLY pull on the chrome bar at the headlight until the clips come off, then work your way over to the other headlight. The goal is to be take your time and be gentle until you have all the clips released. Set your grille aside(be careful not to scratch it). Each head light has two metal tabs on top of it, the outer tabs are slightly hidden in the fender. If you pull these tabs up, it will release the headlight from the frame of the truck(be careful not to let the headlight fall out and scratch your bumper). Once you have the headlight assembly out, pop off the circle rubber cover on the back of the unit. Your bulbs will be inside there, and make sure you don't touch the bulb when removing it. Just reverse the process when your done changing your bulbs. Don't forget to put the rubber cap back on the headlamp unit before you re-install it.

Mathew, more than likely it's your blower motor resistor. These will tend to melt and or the connections will melt, making your switch useless. Suggest also replacing the pigtails, these will melt also. Next to the low beam headlight problem, this is 2nd most popular thing to go wrong.

First check the fuse, the clearance lights are not factory in most cases and the wiring gets shorted from poor wiring. Once you replace the fuse see if the lights come on, if the fuse blows right away find the wiring to the clearance lights and disconnect them, if the short goes away it is a I said the wiring is shorted. If you don't have the owner's manual you should be able to download it at the link provided. It should be fuse #10 a 20 AMP in the interior fuse box. http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/97ecoog1e.pdf

Headlight Replacement (Trailblazer, prior to 2006)

Your grille and chrome bar are held to your truck with eight clips. You can see the top clips if you look. First VERY GENTLY!!! start pulling your grille until you start popping those clips out. Keep an eye on your chrome bar, because it is clipped into the headlight. GENTLY pull on the chrome bar at the headlight until the clips come off, then work your way over to the other headlight. The goal is to be take your time and be gentle until you have all the clips released. Set your grille aside(be careful not to scratch it). Each head light has two metal tabs on top of it, the outer tabs are slightly hidden in the fender. If you pull these tabs up, it will release the headlight from the frame of the truck(be careful not to let the headlight fall out and scratch your bumper). Once you have the headlight assembly out, pop off the circle rubber cover on the back of the unit. Your bulbs will be inside there, and make sure you don't touch the bulb when removing it. Just reverse the process when your done changing your bulbs. Don't forget to put the rubber cap back on the headlamp unit before you re-install it.

you will need to remove the front grill face plate that goes from the front of right headlight to the front of the left headlight. then you will need to remove the bolts at the top of the headlight housing. then you need to pull outwards on the assembly to access the headlight bulbs.

The bulb is replaced not the whole headlight.

you can look at this website it may or may not help, Tim:

http://electricwiringdiagram.com/search/2001+volvo+S40

Changing front, right turn signal on 2005 Buick Terraza: Open hood; when facing the front of vehicle, the right turn signal is on the passenger side (left). The headlight assembly needs to be removed to easily reach the turn signal. On my vehicle, there is a 10 mm screw on the left side. Remove it. There is L-shaped pin on the right side of the headlight assembly. Swing the pin counter-clockwise (to the left). Pull the pin straight up to remove. The headlight assembly is now loose, but there is a pin snapped in a socket on the back of the assembly that still holds the assembly. Pull the headlight assembly hard and straight to the front of the vehicle. When it snaps loose, the assembly is now held just by the rubber gasket surrounding the assembly. You need to gently work the right side of the gasket out of the grill cowling. The assembly should pull straight out. The wires are long enough to lay the headlight assembly in the engine compartment. Finally, the turn signal is now accessible. Twist the light holder counter-clockwise and pull out the light holder. Change the bulb. Do not punch your man-card for credit until you have successfully reinstalled the headlight assembly. It goes back in a little easier the second time. Once you have put the L-pin in place, the screw back, and successfully tested the lights, you can now punch your man-card.

I give the mechanical engineers and designers a D-minus instead of an F only because I was successful on the first try. No light bulb on anything commonly used by people should be this hard to figure out.