OK, after reading a few posts that say my '84 F-150 is supposed to have a headlamp-on, key-in, and seatbelt warning buzzer combined in one unit, I finally decided to investigate why only the key-in buzzer works. This is what I found...

Here's a pic of the harness, part number E43B-14489-MA


Here's a pic of the buzzer, part number E3EB-10B924-AA


As you can see, the harness is an '84/E4, and the buzzer is an '83/E3.
The harness has 7-wires that all check out according to 81-F-150-Explorer's posts.
The buzzer only has 6-pins, the missing pin is for the Brown headlight-on signal.

I'm the second owner of the truck, and when I purchased it at 84,000 mi, the original owner gave me every single piece of paperwork concerning work on the truck, including every oil change invoice. All work was done at the same Ford dealer. There is nothing stating any work was done on the buzzer.

So, questions...
1. Did the factory screw up and put the wrong buzzer in?
2. Does it look like the correct buzzer, but missing the 7th pin? It's not broken.
3. Can I make it work w/ some re-wiring?
4. If I can't make it work, does someone want to trade buzzers or have one I can buy?

Thanks in advance, Dave

 

my 97 is like that. there is a few extra wires that dont connect to the buzzer.... ford back in the day ran wires for stuff that werent used in the option package that someone ordered.

for instance, in my 97 f350 i just got the cruise control module and all the parts and it plugged right in and worked in a non cruise factory truck

 

I think LMC or NPD sells new ones..... I went to the junkyard and got a replacement because my headlight buzzer was not working.

 

E4TZ10B924A (replaced D9AZ10B924A & E1FZ10B924A) .. Seat Belt (or Headlamp on) Warning Light Switch (Motorcraft SW1822) / Available from Ford.

Marked w/ID engineering numbers: D9AB-10B924-AA; E3EB-10B924-AA; E3EB-10B924-AB; E9EB-10B924-AA.

MSRP: $41.78 // FTE Ford Dealer Parts Dept sponsor PARTSGUYED.COM price: $22.56.

You cannot go by ID engineering or part number prefixes to assume what year(s) the part is for, and/or what vehicle(s) it fits, because...

Ford replaces 10's of 1000's of part numbers every year! Keeping track of all these part number changes was...and still is, a royal PITA!

This switch replaced one w/a 1979 LTD part number, and another w/a 1981 Escort part number, which means that E4TZ10B024A fits many 1979 and later Passenger Cars, Trucks, Bronco's and Econolines.

Did your vehicle come with certain accessories....or not? The EZ (and free) way to find out is...Contact Ford, pass along your VIN and request a build sheet (1967 and later vehicles only).

The build sheet will list everything the vehicle came with originally. But will not list any dealer add-ons.

 

As NumberDummy says, the Engineering Number represents the family of the
part. which may or may not correspond to the year of the vehicle on which the
part is actually used. For example, my 1981 400 engine block has got a
casting code of D7TE-A3B, it (and its variants) were used in 1977-1982 351M
& 400 truck & van engines.

What was said about the wiring is true, too. From what I've seen, there seem
to have been a few base wiring harnesses used by the factory; some with
wiring for ammeter/oil pressure gauges (tach wiring was included even if a
tach wasn't ordered) (seems to frequently have orange wrapping), some with
wiring for idiot lights (seems to have yellow wrapping). If AC or power windows/
locks/mirrors or fancy lighting or a CB radio or cruise control or whatever were
also ordered (perhaps as part of option packages or trim levels) then it was
pretty easy to also piggyback the related harnesses onto the main harness.
Think mass production and speed & ease of assembly at the factory.

Wasn't it Henry Ford who became famous for his factory assembly line ideas?

In any event, I'm rambling...

I've got a bunch of those buzzer assemblies (they actually contain two
buzzers) in my garage; some are white, some are black, I don't remember
what the differences are. My 1981 uses separate buzzers for the seat belt &
headlight-on buzzing (Ford wasn't yet offering key-in-ignition buzzers in
trucks, I think that was offered 1982-onward).

In any event, check to see if the wiring behind & under the seat for the
driver's side seat belt latch is, in fact, plugged in and the wiring is good and
you're getting the right voltages at the right times. The best way I can think
of to test the switch in the seat belt latch involves an ohmmeter; resistance
across the switch should be high or nothing depending on if the mating latch
is inserted or not. I know that buzzer won't buzz if that seat belt latch is
electrically disconnected, and nothing will affect the amount of time the red
dash light is lit.

For the headlight-on buzzer, remove & clean the contacts of the driver's side
door pillar switch (I think it's a 9/16" socket) - the one that activates the
cabin lights when the door is opened. I forget exactly how it's all wired but
that switch is integral into the circuit, and those switches corrode somewhat
nastily sometimes.

Could it be that the headlight-on buzzer wasn't ordered as an installed option
from the factory and you need a black buzzer?

Finally, those buzzer assemblies do go bad; sometimes you can hear
'em trying to buzz, and sometimes whappin' on the things while they're in
that state will "fix" them for a little while.

 

Thanks for the replies. I fully understand the Engineering Number info as my truck has many different years of engineered parts in it. I guess what I'm really wondering is did the factory put the wrong buzzer in my truck? I'm supposed to have one buzzer for seatbelts, ignition, and headlamps according to these posts by 81-F-150-Explorer...

[quote]So, I do have only one harness and one buzzer, all wires test ok with a test light, ie. Brown is hot with lights on, Red/Pink is hot w/ door open, etc.... The only issue is the buzzer is missing the pin which corresponds to the Brown wire, but is not broken, it was made that way.

Is it the right buzzer? Would the wrong buzzer actually fit the harness, ie. have the same pin configuration?
Can I re-wire somehow to make it work? I just put a new battery in and have left my lights on too many times in the past.

I know, just buy the right buzzer, however, $ is tight w/ the wife unemployed for over a year, I make @$# for income, and the economy just stinks.

And as a side note to top it off, the stupid politicians for my county who stopped emissions testing in 2007, are voting in about a week to bring back testing. They also want to change the definition of a collectors vehicle from one that is over 25 years old, to one made before 1976. This is after I just rebuilt a Holley 4412, 500 cfm carb and got a few modules and harness for a conversion to DSII. Thank goodness my EEC-IV still works perfect at 98,000 mi.

Thanks again everyone, Dave

 

The headlight warning buzzer was a rather rare find in a truck back into 80's. Heck, even into the 90's, it was pretty much reserved for the higher trim levels.
Back in '86, my former father-in-law purchased a new F150 XLT Ext cab that had pretty much any option available, but I don't recall it having a headlight warning buzzer. Sometime around 91-92, he wanted me to unhook the seatbelt buzzer/key in ignition buzzer. He refused to wear seatbelts, and seldom removed the key..... I remember it had the white buzzer unit.

 

81-F-150-Explorer is right in that the same buzzer unit is used for all buzzing in the later
models. Again, my 1981 has two physical buzzers, Ford integrated them into a single unit
(that contains both buzzers) I want to say after 1982 but it just as well could have been
after 1983, I honestly don't remember.

Send me an e-mail (click my userid -> send e-mail) and I'll send ya (free of charge) all of
the buzzer stuff I have if I still have it/can find it.[0] If it turns out I tossed that stuff, I
can prolly find some others in a local yard sometime and send 'em your way.

My uncle is kinda like that... it's now a state law that you're obligated to wear seat belts
but my uncle - for whatever reason - won't, and he goes so far as to put a big paper clip
on the belt above his left shoulder, this keeps it from retracting as he extends the thing
across his chest & waist to make it appear that he's using the thing. Sheesh.

-chris

[0] Some time ago - shortly after I had first bought the truck - I began spending time in
the junk yards, poking around the old trucks, seein' what was available, and learning how
they were put together. Because there seemed to be so many of the white & black
buzzers in the yards and virtually none for my year, I decided to splice one of the later
two-buzzer units into my wiring, a project which resulted in my getting a fair number of
different buzzers (most of which I'll send to you if I still have 'em). I sometime later
swapped the entire wiring harness for one that was wired for ammeter/oil pressure
gauges, it also came with both buzzers, negating the need for me to re-splice a new,
dual-unit one. I have no idea how many of the things are actually good (read: they work)
you'll have to try 'em and see.

BTW I may have been backwards in my past description of the orange & yellow colors,
which color seemed to apply to which harness. Minor point, I know, but....

EDIT: I don't know anything about if or when when the headlight-on buzzer may have
become standard, I rarely pay attention to the model years of trucks I come across in
the yards.

 

Yeah, the father-in-law hated seatbelts, cause they prevented him being able to easily reach behind the seat for another beer......
He died in 2000, from alcohol-related liver disease.
They passed a law here sometime back in the 90's. I hated it at first. Then, I realized I never got into the racecar without buckling up, and those guys all were *trying* to go the same direction....... It just kinda clicked after that. I still hate the belt reminder lights/buzzers/chimes.

 

My 84 F250 didn't buzz with headlights on, and I did replace that buzzer a few times and never got it working. I finaly found one of those aftermarket headlight reminders and installed it. Once I have the dash pulled out I'll track down the wiring to see what's going on probly dammaged wire somewhere in the deep dash loom....

 

I'll try and clarify some of the confusion...

Since we are talking about the 1984-1986, the Wires are all there for the headlamp on Buzzer as standard equipment.

1984-1986 and later...

There are seven wires.

Brown - Parking Lamp Circut. (Headlamp Buzzer Trigger)
Red/Pink Stripe - Left Hand Door Switch (Headlamp Buzzer Trigger)
Red/Yellow Hash - Hot
Black/Pink Hash - Key In Ignition Buzzer Trigger
Brown/Light Blue Hash - Seat Belt Buckle Switch
Dark Green/Yellow -Seat Belt Warning Lamp
Black - Ground

You need to replace the six pin buzzer with a seven pin buzzer and you will have the headlamp on warning buzzer. That buzzer that is on there now is missing the headlamp on pin. After you swap the buzzer for a seven pin buzzer it should work a treat. The six pin buzzer and the seven pin buzzer are indeed interchangeable and swappable very easily. Unplug one and plug in the other etc...

Here is the picture of the E4TZ10B924A Buzzer that numberdummy mentioned. Notice it has Seven Pins.

http://www.fordparts.com/PartImage.a...&dh=0&type=JPG

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On 1980-1983 it's not that simple.

1980-1983 has two seperate buzzers, and needs the courtesy lamp wiring harness. If the truck is not equipped with the courtesy lamp group, the truck will not have the wires needed to hook up the buzzer. On 1980-1983 you need to get the headlamp on warning buzzer and the underdash courtesy lamp wiring harness to make it work.

===============================

What you need depending on year:

1980-1983: Headlamp On Warning Buzzer (Seperate Buzzer White in color marked: EOTB-13150-AA
1980-1982: Underdash Courtesy Lamp Harness: Plug and play to main harness (Fits 1980-1982 only)
1983: Underdash Courtesy Lamp Harness: Plug And Play to Main Harness (Fits 1983 only)

1984-1986: The wiring is already there in the main harness as standard equipment. In The original posters case, just swap the buzzer.

 

Just to add to this, on the 84+ trucks, you can go to one of the later model chimes instead of the annoying buzzer. I have one from I think an 89 eddie bauer Bronco in my IDI truck, it's engineering # E9EB-100D840-AA
Much more pleasant on the 'ol noggin.

 

Simple sulution, leave it disconnected. More elegant than my solution. Every truck I've had I let the little ******* make some noise, reach up under the dash and start yanking at wires until it shuts up. You know where it is so you can just remove it.

 

No kidding. The thing is so annoying. Let it go for a few months then one day I snapped and tore the thing out. Never missed the little SOB

 

If you don't want the seat belt buzzer to buzz, just disconnect the seat belt buckle switch behind the seat.

That way the headlamp on buzzer will still buzz if you leave the headlamps on.