ConcoursMustang Forums
1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1970 Mustang => Topic started by: silverelvis69 on May 28, 2023, 03:10:27 AM
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Hi All,
Found this plug behind glove box.
Could this be the plug for ignition buzzer?
I also read potentional position is passenger near radio on bracket?
Any help would be great.
Is it plug and play?
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Yes...thats exactly what that is for.
There is a second optional buzzer that could have been on the car as a headlight warning buzzer. Think that was a 5 prong connection in the same area of the harness/dash.
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I believe that is the door ajar buzzer, or at least that's what I call it! It works when the ignition is on and the driver's side door is open.
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As mentioned, that's the plug for the buzzer that buzzes when the keys in the ignition and the doors opened. the buzzer itself has a square plastic post on the top that fits in a square hole in a mounting bracket ad is locked in by rotating the buzzer 45 degrees or so. Here's a few pics of where it goes from the Ford wiring diagrams (#13). If the car had the Convience group option, it used a different buzzer with 2 sets of terminals and a second plug on the convience group harness (along with that plug) plugged into it. (The convience group option added a second buzzer that buzzed if you left your headlights on and turned the key off) Hope this helps, John
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I believe that is the door ajar buzzer, or at least that's what I call it! It works when the ignition is on and the driver's side door is open.
I take it ... If you have the convenience group for this plug?
Cant see to locate this..
Oh well happy to find ignition buzzer..Hope its not too annoying but started tinkering this idea when I rode with my mates XB and had the buzzer and thought....How cool.
Although..Short duration as I guess it would get annoying.
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I believe that is the door ajar buzzer, or at least that's what I call it! It works when the ignition is on and the driver's side door is open.
Is this for convenince group?
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Negative; it is standard in all 1970 underdash harnesses. The convenience harness adds the headlight on buzzer.
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I was told that the buzzer was installed on cars after Jan 70 and I was wondering if this is correct?
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I was told that the buzzer was installed on cars after Jan 70 and I was wondering if this is correct?
There may be a "after" entry date shown in the listing in Ford Car Parts (aka MPC) which is located in this forums' library.
Jim
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I was told that the buzzer was installed on cars after Jan 70 and I was wondering if this is correct?
None of my cars built before then have an ignition buzzer. My January and March cars have it.
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Just for kicks and giggles, there are 2 variants of wiring for this buzzer connector: one with 2 wires and another with 3. The additional wire is a Run-only line that goes to the center pin of the connector. I have no idea which came first...
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The ignition buzzer (ignition key removal warning buzzer) was not installed on all 70 Mustangs. It was rolled into production probably around September 1969. If you look at a 1970 Mustang Owners Manual (2nd edition) dated around September 1969 they have a notice page that is added in there that mentions that buzzer may or may not have been added in your car. So that would make you think around this time frame they were working to add them to all. So as the model year progresses you would have them in all Mustangs.
Trying to see if I can get a photo that shows that page......
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Got these from Mike Bauman who had the second edition print Owners Manual for his October built car....
(https://live.staticflickr.com/65535/52953036187_bb655b463c_c.jpg) (https://flic.kr/p/2oFh9Nx)2023-06-05_13-58-11 (https://flic.kr/p/2oFh9Nx) by Marcus Anghel (https://www.flickr.com/photos/154714213@N02/), on Flickr
(https://live.staticflickr.com/65535/52954015050_cfe884675a_c.jpg) (https://flic.kr/p/2oFnaMu)2023-06-05_13-57-51 (https://flic.kr/p/2oFnaMu) by Marcus Anghel (https://www.flickr.com/photos/154714213@N02/), on Flickr
(https://live.staticflickr.com/65535/52953036182_eb4d7b94dd_c.jpg) (https://flic.kr/p/2oFh9Ns)2023-06-05_13-57-24 (https://flic.kr/p/2oFh9Ns) by Marcus Anghel (https://www.flickr.com/photos/154714213@N02/), on Flickr
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well waiting for NOS buzzer to arrive (like a kid for Santa)
My car was built October 69 so Hoping this buzzer works when I plu it in from adaptor at beginning of these post.
Fingers crossed
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Well This sux
After 2 months wait - igniition buzzer arrived.
Plugged it in.
Not working?
Where should I look? Not very technical.
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Where should I look? Not very technical.
Take or get a electric tester. Can just be a simple one with a bulb that lights up
Get a wiring diagram, test to see if the buzzer is getting electricity when the conditions are correct. If not follow that wire back to the source until you find power. This should locate or narrow down the source of the issue.
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Checked the door jam of left drivers side...I noticed it was a 2 pin but the pig tail socket may have had a 3 prong (cut off) to make the 2 pin switch fit and work.
Could this be the issue as to why this buzzer is not working?
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Checked the door jam of left drivers side...I noticed it was a 2 pin but the pig tail socket may have had a 3 prong (cut off) to make the 2 pin switch fit and work.
Could this be the issue as to why this buzzer is not working?
Does the disconnected third wire match the color coding in the wire diagram?
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Checked the door jam of left drivers side...I noticed it was a 2 pin but the pig tail socket may have had a 3 prong (cut off) to make the 2 pin switch fit and work.
Could this be the issue as to why this buzzer is not working?
Indeed, that is the case. Your missing wire is a red-colored wire.
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If you remove the ignition cylinder you will see if it has the contact switch for the buzzer or not.
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Thanks..Getting some help from a friend to help me sort. I am not too technical and will keep you posted. In the mean time.
I will upload wiring incase for future ref for the next guy.
Appreciate all you help and patience with me.
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Well This sux
After 2 months wait - igniition buzzer arrived.
Plugged it in.
Not working?
Where should I look? Not very technical.
A few things to check...
Check your door switch. Make sure you have the right style ~ mine has 4 wires (courtesy lights, key buzzer, headlights on buzzer and ground), but your diagram looks like just 3 wires. My own buzzer is somewhat temperamental and will only buzz when it feels like it. I'm pretty sure it's cuz of the door switch needing cleaned / adjusted internally, again.
Use a multi-meter and do a resistance check on your "new" buzzer relay. It's possible you got a bad one, despite it being "NOS". My own buzzer had a bad connection inside the relay itself and required a tiny dab of solder to reconnect it properly.
Check the switch inside the column and the wiring for that switch. You'll have to pull the steering wheel to get to the switch itself. It should have a black wire that feeds down the same harness as the turn signal switch and joins into the turn signal switch connector. So make sure that wire is where it's supposed to be and is connected properly (mine was cut and folded over when I bought my car ~ likely the PO didn't care for the buzzing!).
~ My Cougar has an early October build date and all of the buzzer components were in place, just none of it was working properly!
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Your door switch is actually 3 lines, some have 2 wires. There is no ground wire. There's the green/yellow fused BATT power signal, the black/blue courtesy light signal, and the red door open for buzzer signal.
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Thanks very much fellas!!!
All sorted!
The purchased buzzer 1. WAS FAULTY( would you believe it????) It was by accident that I tapped it to get a little buz.
And yes my left door switch was the wrong one. IT SHOULD HAVE BEEN A 3 PIN SWITCH.
I remember the courtesy light would not come on (unless it pulled the toggle out slightly (must have been sticky) and purchased another switch (2 prong) and made it work by cutting the 3rd prong to get it to fit.
26 months later - It came back to haunt me as I wanted to get the buzzer in.
In the meantime I am trying to get a refund of "this so called NOS FAULTY BUZZER) and ended up installing a small electronic buzzer to that lead to get things going in the meantime
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Being in Australia (I could not be bothered waiting for this part to come (ebay first shipment went missing and he sent the 2nd buzzer which ended up being faulty in the end).
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I thank you all for your help and Hope this info will save someone down the track!
I must admit - I am loving the buzzer sound - Just because it was back in the day... perhaps over time it will annoy me but I think no (with a smile :)
Thanks again!
Alex
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A few things to check...
Check your door switch. Make sure you have the right style ~ mine has 4 wires (courtesy lights, key buzzer, headlights on buzzer and ground), but your diagram looks like just 3 wires. My own buzzer is somewhat temperamental and will only buzz when it feels like it. I'm pretty sure it's cuz of the door switch needing cleaned / adjusted internally, again.
Use a multi-meter and do a resistance check on your "new" buzzer relay. It's possible you got a bad one, despite it being "NOS". My own buzzer had a bad connection inside the relay itself and required a tiny dab of solder to reconnect it properly.
Check the switch inside the column and the wiring for that switch. You'll have to pull the steering wheel to get to the switch itself. It should have a black wire that feeds down the same harness as the turn signal switch and joins into the turn signal switch connector. So make sure that wire is where it's supposed to be and is connected properly (mine was cut and folded over when I bought my car ~ likely the PO didn't care for the buzzing!).
~ My Cougar has an early October build date and all of the buzzer components were in place, just none of it was working properly!
Thanks for the FANTASTIC PHOTOS!!!!!
Yes - Mine is a 3 wire (not convenience group. You mentioned 4 so I take is that is for the lights relay maybe?
Thats exactly what happend? Door switch was sticky and I purchased a 2 pin (not knowing better)
So easy to pull aprt to clean/?
AND NOS BUZZER faulty...Semi works when I tap it. What part exactly did you re-solder on that relay?