Depends on which model Freightliner you have. If you have an FLD (120 or 132), you'll have to unscrew the panels they're mounted into in order to access them. It may involve removing multiple interior panels which overlap each other. If it's a Century Class, it should be much easier.. a lot of the times, the only thing holding those panels in place is the seal around the doors.
you must remove the door panel. you will need a star head bit to take the screws out.
just remove the grills off the speakers with a flat head screw driver
A very short Phillips head screwdriver to remove the 2 screws in the cover and lift out. There is not much roomk.
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Use a flat head screwdriver to pop the cover off.
According to http://www.installdr.com/Harnesses/GM-Wiring.pdf the connector for the rear speakers is separate from the front speakers. If the connector for the rear speakers is loose or disconnected, the rear speakers would not work while the front ones will. The amp in the head unit (dashboard radio) powers the front door speakers. The rear door speakers and roof (pillar) speakers in the rear are powered by a second amp under the drivers seat. Either this amp is bad or is not hooked up.
you need to remove the front calipers then remove two Phillips head countersunk screws that are in the middle of the wheel studs
no, as long as the wattage of the speakers are compatible withe the head unit.e.g speakers 200 watts head unit below 200 ,or else you may blow speakers.
you can't
To change the front head light you need to unscrew the screws to remove the protective casing. Once the protective casing has been removed the front head light bulb can be replaced with a new one.
HOW DO I CHANGE LIGHT BULBS