Can't get the domelight to work, the bulb and

Locate the switch that closes (turns on) when you open your trunk. Be sure you have power at the switch with a test light or meter. If you do, be sure the switch is moving and check with your test light at bulb socket for power. You need to trace the wire while checking for power along the way. The following may help if you're not familiar with electrical troubleshooting ...

Could be a bad ground. Could also be a bad connection at the switch or power source. The connection in the switch could be just good enough to power the meter but not the bulb.

Voltage drop test the electrical circuit .

Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Do you know what a wiring diagram is ? Do use a test light ,use a DMM - digital multi-meter . Free wiring diagram here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model . Under system click on lighting then under subsystem click on turn signal lamps . Then click the search button then the blue link . Scroll down to last diagram .

check power to switch,power out of switch,power to bulb,earth,and bulb makes good contact with power and earth posable broken power wire or earth wire

Hi,
If its not a fuse it is mosy likely a wiring problem. Best way to determine is to get a voltmeter like this ( http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dautomotive&field-keywords=volt+meter ) and test all of the receptacles with problems and see if they are getting power.

If the voltmeter shows that there is no power then you have a break in the wiring and have to either fix the affected area or re wire the whole thing.

If the Voltmeter shows that there is power then you might want to check the light bulbs and ensure that they are not burnt out. Evidence of this are discoloration in bulb and/or pieces of metal in bulb. These fragments can be heard if you gently shake the bulb.

Yes it could be an electrical issue with a electrical wiring, or it could just be a bad headlamp assembly. get a multi meter and test for voltage and the light bulb connector and at the headlamp connector (black on metal frame and red at connection) if you don't know which is positive just test both at least one lead will show 12.-14volts. (make sure your lights are on) If you dont get power at the headlamp connector its a electrical harness issue and stay away. if you loose power at the bulb connector its just a bad headlamp. a multi meter is an electrical testing tool that you can get at any hardware store.

check the bulbs, check the connector ,check ground and voltage power check fuses and check brake light switch right above the brake padal.

remove the bulbs & check for 12 volt current with the light switch on using a multi meter or test light.(ground it to a clean spot on frame of the car) If there is dirt present in the receptacle sometimes it will not get a good ground. If you have 12 volts in the receptacle check the ground for continuity.

Do you own a DMM - digital multi-meter ? Do you know what a wiring diagram is an how to read one ? Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model an engine size. Under system click on lighting, then under subsystem click on courtesy lamps. Click the search button then the blue link . First diagram , look at the right , you will see trunk room lamp .At the top you'll see the fuse the supply's power to the lamp . Check for B+ voltage going in an out , check the switch .
Electric Testing Techniques You Need to Know

my tail lights on a 2002 buick regal do not go on when lights are on, I changed a couple of the bulbs still nothing, brakes lights and backup lights work.... also the inside dash lights do not work could it be a related problem,

DDennis