What is this thingamajig ??
#1
12-22-2003, 09:39 PM
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What is this thingamajig ??
Im trying to identify a part hanging under my dash board just to the right of the steering wheel. its an electronic black box with 7 connector prongs about 2 inches by 2 inches by 1 inch. Nothing is hooked up to it and im wondering just what the hell is it for. The part # on it is F2TB-10D840-AA with ford emblem on it........... anyone got any ideas ??
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12-22-2003, 09:45 PM
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12-23-2003, 03:44 AM
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#10
12-23-2003, 04:23 PM
#12
12-23-2003, 11:32 PM
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#13
03-20-2005, 02:08 AM
It's 99% the door open & key in, lights on, ignition on alarm.
It's 99% the door open & key in, lights on, ignition on alarm.
My '90 Ranger has the same part but numbered E9EB-10D840-AA and
that's what it is. I pulled mine because it's been getting less and less
audible. I disassembled it and found that, rather than using a <$0.25
speaker, Ford invented their own by mounting a coil on the PC board and
inserting a huge E-bar through it that affects (magnetically vibrates) a
ferrous disk that is mounted in plastic just below the E-coil. Unfortunately,
the distance between the disk & coil is critical and also, unfortunately, is
determined by a foam ring that, in my case, tends to disintegrate. If this
sounds too complicated; yes, Ford, it is. Geez guys, just buy a speaker.
I've found that a 32-ohm speaker across the coil works, as well as a few piezo elements I had on hand sound ok when wired across the coil. I'm not
sure if the coil impedance is or isn't required for the chime oscillator so I'm
leaving it in place, even though it will be useless without the disk. Speakers
that I have of 16 & 8 ohms tend to be too loud.
Unfortunately (but not very), these all require cutting the case to mount
the sounding device. I'll still make the rounds to see if I can find a very
thin O-ring that might be used to remount the disk, replacing the rotting
foam, since the truck is currently up on stands for a fuel tank drop and I
have the time.
Anyway, my searches for a replacement have shown me that the important
reference is anything-10D840-anything. Obviously, the first "anything" will
indicate the first year of manufacture and, apparently, the middle number
indicates the function- in this case the alarm chime. I don't know if the
year affects the design, although I expect it would.
If yours has nothing connected to it, I would suspect that it has been
disconnected by a (maybe) previous owner who was irritated once too
often. There should be a matching connector in the very near vicinity if
you care to reconnect it. Personally, I love this alarm and want mine back.
My '90 Ranger has the same part but numbered E9EB-10D840-AA and
that's what it is. I pulled mine because it's been getting less and less
audible. I disassembled it and found that, rather than using a <$0.25
speaker, Ford invented their own by mounting a coil on the PC board and
inserting a huge E-bar through it that affects (magnetically vibrates) a
ferrous disk that is mounted in plastic just below the E-coil. Unfortunately,
the distance between the disk & coil is critical and also, unfortunately, is
determined by a foam ring that, in my case, tends to disintegrate. If this
sounds too complicated; yes, Ford, it is. Geez guys, just buy a speaker.
I've found that a 32-ohm speaker across the coil works, as well as a few piezo elements I had on hand sound ok when wired across the coil. I'm not
sure if the coil impedance is or isn't required for the chime oscillator so I'm
leaving it in place, even though it will be useless without the disk. Speakers
that I have of 16 & 8 ohms tend to be too loud.
Unfortunately (but not very), these all require cutting the case to mount
the sounding device. I'll still make the rounds to see if I can find a very
thin O-ring that might be used to remount the disk, replacing the rotting
foam, since the truck is currently up on stands for a fuel tank drop and I
have the time.
Anyway, my searches for a replacement have shown me that the important
reference is anything-10D840-anything. Obviously, the first "anything" will
indicate the first year of manufacture and, apparently, the middle number
indicates the function- in this case the alarm chime. I don't know if the
year affects the design, although I expect it would.
If yours has nothing connected to it, I would suspect that it has been
disconnected by a (maybe) previous owner who was irritated once too
often. There should be a matching connector in the very near vicinity if
you care to reconnect it. Personally, I love this alarm and want mine back.
#14
02-04-2006, 02:50 PM
Rangerang is absolutely correct. It's the door open & key in, lights on, ignition on alarm. I found it ridiculously simple to disassemble the box (mine was hinged and easy to open) and replace the deteriorated foam on the ferrous disk. I used a piece of foam from a reusable filter from a window A/C unit. For a template I used the original ferrous disk and cut around it then cut out the middle. No need for adhesive when reassembling. Doing this would eliminate the possibility of causing undesirable volume/tone and it's cheap and easy without the need for any modifications to the chime box.