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Old 10-19-2010, 08:32 AM   #3
Registered User
Join Date: Sep 2009
Location: Michigan
Posts: 14
My Ride: 1999 323i
Yes, the black box in the first picture is the one I am referring to. and the local BMW dealer identifies this as part number 65 24 8 380 944 Trap Circuit for FM Antenna. Is this incorrect? To me that looks like the connection for the grid but why is it identified as a trap circuit for the fm antenna.

Your second picture from the divers side, the guide identifies that box as the amplifier, i am assuming the amplifier for the antenna??

I checked those two leads going from the box (in the first pic - passenger side) to the grid and I do not get 12 volts there, or any voltage for that matter.

The relay for the rear window heater located in the trunk 'clicks' when the heater button is pushed, the rear window heater light comes on, and the fuse is good, but no heat to the grid.
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