Question about Humvee 15 Million Candlepower Searchlight 110volt by

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Will not light up

The battery is charged. how do I check or change the bulb.....where do I find a replacement if it is bad.

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The bulb is a H4 bulb which you can buy at most Auto Parts Stores, when replacing the bulb do not touch the new bulb with your bare fingers because the oils on your skin will cook on the bulb and shorten the bulb's life. Use a soft cloth when handling the new bulb.

Posted on Jun 17, 2010


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Tried to install a headlight modulator in a 2011 Triumph Sprint GT. now I have no power whatsoever, battery drained replaced with a new battery and still no horn, lights, or power

It sounds like another fuse is blown or possibly a relay. Check all of them, if none are bad, then make sure your battery cables are good, use a test light to check them. Its more then likely a bad relay though. Good luck !

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Slight flicker with headlights. Replaced battery which was needed. Headlights still flicker. Had changed out original lamps with brighter lamps. Could this be the problem?

Bad plugs on the bulbs.Bad grounded lights wiring.Bad alternator ground.Bad alternator charge.Bad lights switch.Also ,the new lamps may show more sensibility in voltange change or put more pressure on a older bad wiring link.

Oct 26, 2013 | 2006 Ford Mustang

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Battery loseing charge have changed alternator and had new battery but its still loseing charge

There is something using the battery power once you are parked.
Check your radio is off, interior Lights are off (check all bulbs) check exterior lights are off (check all bulbs) Check nothing is plugged into the ciggerette port

May 12, 2012 | 1987 Vauxhall Astra

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I changed my alternator and battery they both test as good but my car wont charge the battery it keeps shutting down like the alternator is bad the horn is clicking and the airbag light comes on just...

Might be anything, but before going further I wish to check and clear three most common factors:
There are 3 most common reasons for the battery to drain.
You have to check these one by one.
A bad charging system.
Start the engine, and with a multimeter, or Volt/ Ohm meter, set at 20V DC, measure the voltage between terminal (+) at the battery, and a good ground. The reading should be 13.8 V to 14.2 V. If this is O.K then you have to check the battery.
Stop the engine and check the voltage between the (+) and (-) terminals of the battery. If the voltage is 12.6Volts than the battery is fully charged. If it is 12.45Volts the battery is 75% charged and so on. A bad battery is not able to hold the charge anymore, and need to be replaced with a new one.
The third reason is a phantom voltage leak.
This is a parasitic electrical drain on the battery, because a relay is sticking, a module is not shutting down, or there is a shorted diode in the alternator. To check this you need a bulb 12V 1 Amp, connected with two wires and two alligator clips. Disconnect the harness from the positive terminal of the battery, and connect the bulb in serial, with positive terminal of the battery, and with positive harness of the car. Make sure to create solid contacts with alligator clips. The car electrical system hates sparks, which you have to avoid. As soon as you connect the bulb, the system might sink up to one Amp of electricity. This happen because the modules and computer starts learning, but soon the current will decrease in milliamps. If not then you have parasitic electrical drain on the battery. In this case you have to remove and put back in place, one by one all fuses. If the light shut off then you have located the problem.

Oct 21, 2010 | 2000 Mercury Sable

2 Answers

Will the alternator charge the battery if i have a blown fuse or a bad bulb

Yes it will charge the battery unless the fuse that is blown is the one for the charging system. A blown bulb will not stop it from charging.

Sep 06, 2009 | 1986 Chevrolet Monte Carlo

1 Answer

Charging system

If you have changed the alternator and regulator, about all that could be left would either be a short circuit that is draining current away, or a bad ignition warning light bulb. That is because the power to energize the field of the alternator, comes through this dash bulb.

Jul 18, 2009 | 1984 Ford F 350

2 Answers

Bad battery ???

It sounds like the battery has just enough "juice" to give the small light some power, but when the larger light is turned on it overloads the bad (or expired) battery. When you put a new battery in you can extend the life by not using the light when the battery starts to die. This is when it starts to permanently damage the battery. Turn it off and recharge as soon as it dims. Charge often, but don't leave on the charger too long unless it is a smart charger and turns off when the battery is fully charged. This will also reduce the life. You can find a replacement battery here:

Jan 16, 2009 | Camping, Backpacking & Hiking

1 Answer

Change bulb light will not turn on

Try getting a new battery, and see if that works.

Jan 01, 2009 | MagLite RX3019 Rechargeable Flashlight...

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Head Lights

If only the headlights are dull and not putting out the correct light, I would suspect a bad ground (earth) connection somewhere in the headlight circuit or the fuse for the headlight circuit. Something is causing excessive resistance and causing less voltage to be provided for the headlights. If all the lights are dimly lit, then I would check the charging system, the battery and the ground cable for the battery, chassis, and engine.

Jun 13, 2008 | 1995 Ford Crown Victoria

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