My headlights are not working how can identified which fuse it is on the box?
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My name is Ben and I'm your guru, i.e., mentor, an influential teacher or popular expert: a management guru. - origin from Sanskrit, 'weighty, grave', for today.
Your fuse -- if, in fact, it's blown -- is merely indicative of a bad ground, water in the wiring, etc. In fact, the fuse is connected to the headlight relay that actually closes the circuitry so that you headlight go on.
With that in mind, let's begin.
Do a Thorough Visual Inspection
Do a thorough visual and "hands-on" underhood inspection before starting any diagnostic procedure! You can find the cause of many problems by just looking, thereby saving yourself a lot of time.
• Has the vehicle been serviced
recently? Sometimes things get
reconnected in the wrong place, or
not at all.
• Don't take shortcuts. Inspect hoses
and wiring which may be difficult to
see due to location.
• Inspect the air cleaner and
ductwork for defects.
• Check sensors and actuators for
• Inspect the illumination system wires for:
- Damaged terminals.
- Split or cracked connectors
- Splits, cuts or breaks in the inline fuses, circuit brreaker
wires and insulation.
• Inspect all electrical leads for:
- Correct wiring routing. Refer to vehicle
- Pinches and kinks.
- Splits, cuts or breaks.
• Inspect wiring for:
- Contact with sharp edges.
- Contact with hot surfaces, such as
- Pinched, burned or chafed insulation.
- Proper routing and connections.
• Check electrical connectors for:
- Corrosion on pins.
- Bent or damaged pins.
- Contacts not properly seated in
- Bad wire crimps to terminals
Instructions on how to find the headlight relay
1. Locate the electronic module that houses the relays. The Navigator has a set of relays that are all connected in a strip module.
2. Search for the module above the accelerator pedal under the dash. The module is directly above the visible diagnostic tool connector. The module is a rectangular black box with a snap lid. It will be easier if you remove the module before trying to remove the relay.
3. Find the metal support that the module mounts onto and slide the module down. Once the module is free of the support, bring it out into the open. When the module is out in the open the lid will be easy to remove.
4. Remove the headlight relay, have it tested, and replace it with the new one if needed. Place the lid back on the module and slide it back up the support arm.
5. Start the Navigator and check all the lights, especially the turn signals and high beams.
I've purposely left your question unanswered because I wanted you to approach the problem in its totality, Now let's check that fuse:
Things You'll Need: Fuse puller and a fuse of the same rating
1. Turn the car off before touching the fuses. Locate the fuse box in your Lincoln Navigator, left of your steering wheel and next to your brake pedal.
2. Open the cover of the fuse box and pull out the fuse for the outage you're experiencing. Refer to the back of the fuse box for a list of fuses and their location by number and a corresponding fuse amperage number. For example, your audio fuse is listed as number 1 with an amperage of 25A. The amperage gives insight into the type of fuse you'll need to replace the blown one with.
3. Examine the fuse and make sure it's blown. The wire in the middle of the fuse looks burned if it's blown. Check the other fuses as well, making sure none of them have been burned out either.
4. Replace the blown fuse with one of the same amp rating. Using a higher rated fuse causes the fuse to blow again.
5l Push the fuse into the clips so that it stays in place and close the fuse box. Verify the electrical issue has been resolved.
All the best,
Sep 14, 2011 |
1999 Lincoln Navigator