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Old 10-23-2008, 01:42 AM
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Question Cylinder under rear seat?? '86 300E

I recently took the rear seat out of my '86 300E to vacuum the car out. I was lifting the foam to see if there was any junk under it and I noticed that there was a disconnected wire under the seat. The wire goes to a cylindrical box that measures about 6 inches in diameter and it's about 5 inches tall. It has 3 copper wires coming out of it that connect to the harness. What is this device and what does it do? Is it ok that the wires were disconnected?

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Old 10-23-2008, 01:57 AM
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is it round and white colored? if it is what i think it is,then it is a motion/tow sensor for the factory alarm, most or all of them failed early and the dealer would disconnect them, i think they are filled with a liguid and have a float inside
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Old 10-23-2008, 02:06 AM
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Yes, it is white. Your diagnosis sounds right because there is only that one wire going into it and it's not connected to anything else except for the frame. Thanks a lot for your help in ID'ing it!

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