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  #1  
Old 10-27-2009, 12:48 PM
rushmold rushmold is offline
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BMW Z3 trunk lid wiring problem

This car has only 23,00 miles on it and I just repaired my Z3 wiring/electrical problem (with the help of a friend). If your trunk light dosen't work, the alarm dosen't work properly or the tag lights don't work this is more than likely the problem. If there isn't a problem now, there will be a problem or you have a problem and don't know it. This is an easy fix and will save you a lot of head aches and $$$$.... UNHOOK THE BATTERY FIRST. The nylon clip that holds the wire harness to the hinge on the left side of the trunk has put the harness in a bind every time the lid is closed and cause the wires to break. You are able the feel through the rubber tube for broken wires or cut a slit in the rubber hose and open it to see what is broken, then split the harness where the wires are broken. If you have 2 brown wires, mark them with a magic marker before you cut. You need to cut them all because they all have fatigued in that area. Reroute the harness through the inside the trunk area through the round hole in the lower left side of the lid, put the rubber water grommets back in their holes that are out side the trunk seal area. Moving the harness to the inside of the trunk will keep the harness from binding and causing wire fatigue but there is potential for snaging onto the wire harness with luggage or over loading the trunk. Plug the wire holes in the grommets. With a small soldering pencil solder the wires back with heat shrink tubing well out of the way until all wire are soldered the use a hair dryer to shrink the tubing. Your local hardware store will have the shrink tubing and a grommet for the trunk lid hole. If you haven't had any problems with this area of your Z3, you will. If not addressed in time you could have serious problems and they will cost big $$$. This is the weakest point with this car and it should have had a recall.

Don't use your new bath towels to protect the fender and trunk, that might create domestic problems. If there are any questions please ask.

UNHOOK THE BATTERY FIRST.
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Last edited by rushmold; 10-28-2009 at 02:23 PM.
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  #2  
Old 10-27-2009, 12:51 PM
hpowders hpowders is offline
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Welcome!

Post on the Z3 and Z4 forum.
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Old 10-27-2009, 01:17 PM
BMW_GAL BMW_GAL is offline
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  #4  
Old 10-28-2009, 05:23 AM
Desolationoverdrive Desolationoverdrive is offline
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Welcome to the Forum! Nice Z
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  #5  
Old 10-28-2009, 10:43 AM
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Solidjake Solidjake is offline
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Thanks for the tips! Please post this in the Z3 section.
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  #6  
Old 10-31-2009, 05:37 PM
rushmold rushmold is offline
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Z3 section??

This is now in the Z3 section. Thanks for you in put. I hope this gets to everyone with a Z3.
Rgds

Last edited by rushmold; 10-31-2009 at 06:13 PM.
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