Where is the fuse for the trunk light on the 2008 S80?
Both trunk lights are not coming on when I open the trunk. I checked them with an Ohm meter and they are both good. I suspect the fuse, but can't locate it in the owner's manual. Where is the fuse and what is it number?
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-Are you talking about the dome light and door lights...?
-Make sure the dimmer switch is turn to ON position and high . Then open 1 door and check the wire go to the light with Ohm meter. You should have 12 volts. If not then check the fuse.
fuse blown fuse that look good can be bad, if they look bad, they are. use any DMM meter, use Rx1 ohm range. check for fuse continuity. if zero ohms , iTs good, and the meter never lies. learn to use the meter. if the fuse is good, use the same meter, to measure voltage and trace the wires to the failing point. (open circuit)
if you have a volt meter, turn on the lights and either take out a bulb or unplug the harness going to one of your rear lights. the using the meter (switched to VDC) see if you power going to the lights if not, you have a wiring harness or a fuse issue. If you have power coming back to the light, switch you meter to Ohms and check to see if you have continuity on the bulb itself. you can also check your fuse with the meter on the Ohm setting.
Your going to need a volt/ohm meter for testing this prob. You need to put the meter on amperage mode and turn off all devices in car and close all doors and make sure key is off! Disconnect the negative battery cable and use the meter to hook from the battery negative cable to the other end of the cable, basically the meter is completing the circuit. Once you turn the meter on the vehicle will have to power down cause your meter connection will have woke up several modules, wait bout 5 min with the meter on, if the meter is 10 ohm scale a good reading should be around 0.025 to 0.001, if it's anything higher then pull fuses 1 by 1 until the draw falls into proper range, that will help you narrow down what circuit the draw is related to. Quick check, make sure the trunk light and or glove box lights are actually turning off, most common prob for current draw..
check for bad fuse if you have multi meter you can check the switch ,place probes on each end of switch put the meter on low ohm setting if switch is good it should read 0.1 ohms when you activate the switch
If you didn't use an OHM meter or a test light to check the fuse, it still could be a bad fuse. Alot of times the fuse looks good to the eye but is in fact bad. Plus, in some autos, there are more than one fuse. Check to make sure there isn't an additional fuse somewhere. If all the fuses are good, check your switches for power, If your not getting power to the switches, go back and make sure there is power to the fuse. If no power there, then you have to trace the wires for where there is a break in the wires.
Once you remove the Right hand side tail light assembly (by removing 3 wing nuts from the trunk), look straight down (from the tail light opening). You will see the top of the muffler and there is a wire harness right top of it. Check for wear/heat damage.
Check fuses on fuse panel. Take car to autozone and have them find / locate your fuse block. You check fuses and light bulbs with a volt ohm meter.(vom can be bought @ wal-mart, target, kmart etc. an investment - not a cost.
Let there be light . . .Good luck