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Car Forum / BMW Cars / May 2008E32 Lic Plate Lights Error
1994 740iL The Lic Plate Lights (in trunk lid) will not turn on. Interesting thing is that when I lift the trunk lid to the full stop, they both turn on. When I lower the trunk lid, they turn off again. Any ideas from you electrical gurus? I need to get these working to pass VA inspection. > 1994 740iL > The Lic Plate Lights (in trunk lid) will not turn on. Interesting thing [quoted text clipped - 3 lines] > lower the trunk lid, they turn off again. Any ideas from you electrical > gurus? I need to get these working to pass VA inspection. excuse for my english. The wires are cuts. Search near the articulation of the trunk. You shoult cut the damaged wires few centimeters up and down the damages and replace whith new wires (soldering with tin and good insulation). Look the ground connection too. I'd be looking at the wire harness where it goes into the trunk lid. My guess is that the wires going to the license plate light are broken due to the flex that comes from opening and closing the trunk. > 1994 740iL > The Lic Plate Lights (in trunk lid) will not turn on. Interesting thing > is that when I lift the trunk lid to the full stop, they both turn on. > When I lower the trunk lid, they turn off again. Any ideas from you > electrical gurus? I need to get these working to pass VA inspection. Thanks Jeff and Petrus - I would agree except that the trunk lights go on at exactly the same time that the lic plate lights go off. Since I just bought the car, I dont know how the lights are supposed to work. But this is how it works now: When you pop the trunk the lic plate lights turn on. As the trunk lid hits the top stop, the lic plates turn off (which also illuminate the trunk area) and the trunk lights turn on. These lights behave the same way whether the headlights are on or off. The only problem is that the lic plates never turn on when the headlights turn on. So, it may be that the current on/off behavior is normal (but I dont know since I just bought the car) but the switch over between lic plate lights and trunk lights is exactly the same time - like they were being controlled by a switch. Is there a lic plate light sending unit somewhere that I should check? Anyone have an E32 or E34 that can verify that this behavior is normal? > I'd be looking at the wire harness where it goes into the trunk lid. My > guess is that the wires going to the license plate light are broken due to [quoted text clipped - 5 lines] >> When I lower the trunk lid, they turn off again. Any ideas from you >> electrical gurus? I need to get these working to pass VA inspection. You have a problem with a ground somewhere. > Thanks Jeff and Petrus - > I would agree except that the trunk lights go on at exactly the same time [quoted text clipped - 20 lines] >>> When I lower the trunk lid, they turn off again. Any ideas from you >>> electrical gurus? I need to get these working to pass VA inspection. I will check the splice before the trunk lid to see if I have good ground. > You have a problem with a ground somewhere. > [quoted text clipped - 24 lines] >>>> from you electrical gurus? I need to get these working to pass VA >>>> inspection. >1994 740iL >The Lic Plate Lights (in trunk lid) will not turn on. Interesting thing is >that when I lift the trunk lid to the full stop, they both turn on. When I >lower the trunk lid, they turn off again. Any ideas from you electrical >gurus? I need to get these working to pass VA inspection. 1. Bad connection... when you lift the trunk, it moves the wires around and makes a good connection. Wiggle things and see. 2. Bad ground... but when the trunk light is turned on, the license plate lights get grounded through the trunk light circuit. --scott  Signature"C'est un Nagra. C'est suisse, et tres, tres precis." I'll check it out and get back - thx > >1994 740iL >>The Lic Plate Lights (in trunk lid) will not turn on. Interesting thing [quoted text clipped - 12 lines] > > --scott thx - I found the problem just as you described - broken ground wire in the articulating portion of the harness > I'll check it out and get back - thx > [quoted text clipped - 14 lines] >> >> --scott |
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