How can I get a diaphragm of replacing a headlight switch

There's 2 general types of switch. A stalk/indicator switch and a dashboard style switch.





You'll get both from your main dealer or can order from most car spares shops.

If it's the second type of switch pictured above, check how many terminals are on the rear of the old one before you order a new one.

It's probably better if you search Ebay for 'headlight switch' or 'Jeep headlight switch' ... whatever make of vehicle you have
headlight switch

If your car has a light control module, this may be your problem. If so, it's not hard (but pricey) to replace. As you're sitting behind the wheel, the LCM is under the dash just up from your right foot. Check online parts store for a picture.

I f you've checked your fuses/fusible links then it's most likely the headlight switch is shot/melted on the backside of switch. I've replaced mine twice and a few times on other mustangs 1987-1993. To remove the switch you will need 2 small Flathead screwdrivers, there are two locking tabs on the side of the switch that must be pressed in at the same time pulling out towards the rear of the car will get the switch out. Then remove the switch from the tab or tabs holding the switch to the harness. Inspect wiring and connectors for damage. Replace in reverse I've attached a picture of replacement part. Good Luck

HEADLIGHTS NOT WORKING

It can be faulty headlight switch or issue with its wiring. Or its faulty head light fuse.

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To troubleshoot the issue i suggest you few help links with appropriate solution. So you can follow the test and confirm what exact problem is there in your case of headlights not working:-----

Click the link below: -----

All headlights not working?

http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html

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• Working of Headlight switch?
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• Both headlight bulbs blow together?

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• Car headlight bulbs don't last long?

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2007 Dodge Caliber: Low Beam Headlight Not working

http://technoanswers.blogspot.in/2012/06/2007-dodge-caliber-low-beam-headlight.html

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2003 Toyota Camry: Headlights Work Intermittently?

http://technoanswers.blogspot.in/2012/04/2003-toyota-camry-headlights-work.html

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Chevy Tahoe: Low Beam Lamps are not working?

http://technoanswers.blogspot.in/2012/04/chevy-tahoe-low-beam-lamps-are-not.html

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2001 Chevrolet Tahoe: Headlights not coming ON?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-headlights-not.html

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2004 Dodge Ram: High Beam Light is DIM?

http://technoanswers.blogspot.in/2012/04/2004-dodge-ram-high-beam-light-is-dim.html

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2001 Chevrolet Tahoe: Both Low Beam Lamps Not Working?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-both-low-beam.html

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Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

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How to Replace a Headlight

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight.html

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How to Replace a Headlight Bulb

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-bulb.html

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How to Replace a Headlight Switch

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-switch.html

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How to Replace a Headlight Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-assembly.html

How to Replace a Park Light Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-park-light-assembly.html

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Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

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Headlight Assembly Removal On Honda Accord

http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html

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Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html

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How to Replace a Headlight Door

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-door.html

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How to replace HID headlight bulbs for lexus 400h?

http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html

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These will help.

Thanks.

On some cases there are few hidden clips holding the assembly from under hood,that has to be released to remove headlight .

There are few troubleshooting help links showing how to replace car headlights,i suggest you to refer the links to solve these issue.

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Click the link below:------
How to Replace a Headlight http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight.html

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How to Replace a Headlight Bulb

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-bulb.html

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How to Replace a Headlight Switch http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-switch.html

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How to Replace a Headlight Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-assembly.html

How to Replace a Park Light Assembly http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-park-light-assembly.html

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Low beam headlights Modification? http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

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Headlight Assembly Removal On Honda Accord http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html --------------- Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html-----------
How to Replace a Headlight Door http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-door.html

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All headlights not working? http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html

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How to replace HID headlight bulbs for lexus 400h? http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html

----------
• Working of Headlight switch?
------------
• Both headlight bulbs blow together?
------------
• Car headlight bulbs don't last long?


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These will help.
Thanks.

The headlight control switch is on the steering column. To replace the switch remove the plastic trim covers over the steering tube to reveal the switch and connectors. Disconnect the battery negative cable before starting work, this is a must. Below is a picture of the switch.

Replace the headlight pigtail or plug and the headlight also. Engine is idleing too low probabally IAC (idle air control motor) is worn out. Also there is a sensor when you turn on a/c witch also comes on with the defroster that tells the pcm to adjust idle for a/c operation that may be bad or not connected.

the headlight switch is located behind the knob that turns on the headlights. If you are replacing it then autozone typically has pictures on how to install. They have some located on their website as welll.

I believe, the best way to track down a headlight vacuum problem with a Corvette, is to make yourself a checklist, and go through it one by one.

Start at the vacuum source.

1.Is the main hose coming out of the intake manifold getting vacuum?
Pull the hose loose from the Vacuum Filter. (White round plastic object with a molded fitting on each side) Is there vacuum present?
No? Remove the hose from the intake manifold fitting, remove the fitting. Take a stiff piece of wire, (Open wire clothes hangar?), and see if the opening is blocked. Perhaps the carbon has built up here.
Vacuum present? Go on.

2.Remove the hose from the other side of the Vacuum filter. See if you can blow through the filter. This filter is to prevent particles from going down into the engine. The filter may fill up, and be blocked over time.
You can blow through it? Go on. No? Replace it. (Replace items that you have disconnected, and checked to be good, as you go forward in your checklist)

3.Is the Vacuum Check Valve working correctly? The check valve has two ports on one side, and one port on the other. You should be able to blow air through either of the two ports, but not be able to blow air through the single port.
Checks okay? Go on. It's bad? Replace it.

4.All devices connected and hoses. Set the parking brake. Start the car. Disconnect the vacuum supply hose under the dash, to the headlight switch. This hose connects at the back of the headlight switch.
Is there vacuum present? Should be. If not, it's the hose coming up to it. If so, disconnect the hose that is at the back of the 'Pull Down' switch.
(Manual Override Pull Down Switch)
Vacuum coming out of the fitting on the 'Pull Down' switch? Is the knob pushed up, or pulled down? Pull it down to open it. Vacuum coming through? Yes? Go on. No? Replace it. (Should be in the Up position to keep the headlight doors open. You are just testing the switch itself)

5.Car off, not running. Things get a little tougher here. You now need to access all of the front vacuum components, and hoses. The best way to do this, is to remove the hood. I would mark around where the hinges attach to the hood, so that realigning it will be easier. If you have a concours show car, I leave the method of marking it up to. Or, you just may want to remove it, and reset it without marks on your baby. I Fully understand! ('70 and '76 'Vette owner)

You should still have vacuum built up. The hose from the 'Pull Down' switch comes from under the dash, through the firewall, down the left fender well, and ends in a 'T' fitting in the Front/Middle, of the car. Remove the hose from the 'T' fitting. Use care, as the fitting may be plastic. (Or you may have replaced it with a metal one. Smart person you, if you did!)

There should be a residual amount of vacuum. If not, reattach the hose, fire the car up. Disconnect this hose again. You should be well away from the fan, and your parking brake should be set.
(I realize that the radiator, and radiator shroud, blocks you from the fan, but I just had to say that)

Vacuum coming from the hose? Okay, reattach it.

6.Your Actuators have a rod coming out of the middle of them. This rod operates the headlight mechanisms. Down where the rod first comes out of the Actuator, there is a Rod Dust Shield. Under this dust shield is a Rod Seal. The seal goes around the rod, and is attached to the middle of the Actuator. Press your finger/thumb against this seal. Hear a vacuum leak? Time to replace that seal.
Go to the other side. Is it leaking? Time to replace that seal. New Actuators are about a $100 bucks a piece. Seals are a WHOLE lot cheaper!

The Green hose opens the headlight door. The Red hose closes it.
If the headlight switch is in the On position, and the 'Pull Down' switch is in the Up position, go from underneath the car, and push up on the front of the headlight door. The headlight should come up.
No? Go to the door mechanism. There is a L shaped link. Push down on it. Now the door should come up. Suspect a bad Actuator.
Depends on if those seals are bad. If they leak enough it may not be the Actuator.

7.Your Vacuum Reservoir is up on the fender well. If it's the original one it's steel. Check it for holes. These tanks rust through.

8.Check the Vacuum Relays. There are two. The middle fitting on the body of the relay, is where the hose from the Vacuum Reservoir attaches to. If memory serves there is a single hose coming from the Vacuum Reservoir, and comes to a 'T' fitting, then splits off to those Vacuum Relays, for the '69 'Vette.

There is a diaphragm at the end of each relay. The diaphragm enclosure, looks like two pie pans put together. These enclosures can rust over time, and develop a hole for a vacuum leak. The hoses from the 'T' fitting, that goes up to the 'Pull Down' switch, comes to this diaphragm. If this diaphragm is bad, the headlight doors won't go up, or come down.

Here's a link to a pdf file containing the headlight wiring diagram for your year model Dodge Ram 1500..
I can't help but notice that you say you've replaced the headlight relay? That's quite odd, because there is NO headlight relay on this vehicle- only a 40 amp fuse located in the power distribution box that sits behind the battery inside the engine bay.
The switch is notorious for burning out because there is NO RELAY on this vehicle, and there is a recall (#819) but this only affects 3500 models even though the headlight wiring is the same for 1500,2500 and 3500 model Rams.
Here are two more links that will help you troubleshoot your headlights problems.
HereInformation on Putting a Relay in the Wiring System