Key buzzer relay for 70 Mach?

[miketyler 15]

I am getting ready to put the clock panel in and have two plugs unconnected. One is the wide three lead plug for the key buzzer relay. Are these availale or do most just leave this disconnected?

 

The other is a three lead plug similar to sealed beam in shape. Wire colors are red, blue, and black/green stripe. I've panned over the wiring diagrams and cant nail this one down.

 

Thanks in advance

[LoneWolf2U 136]

The 3 prong square one goes to the blower motors resistor block.

[miketyler 15]

No, thats already plugged in. Besides, it wont reach that far.

[LoneWolf2U 136]

Did you try the fan switch then?

From your pic, Its hard to get a reference as to where the wire end is located.

From the wiring diagrams those colored wires and plug work the blower motor.

Edited February 28, 2012 by Mach1Rider

[miketyler 15]

The fan switch is plugged in and is a 5lead plug. It wont reach that far either. See pic. The plug falls about center of the glove box. Maybe is a plug for the rectangular standard clock?

Edited March 1, 2012 by miketyler

[Mike65 476]

The fan switch is plugged in and is a 5lead plug. It wont reach that far either. See pic. The plug falls about center of the glove box. Maybe is a plug for the rectangular standard clock?

 

The standard rectangular clock uses the same harness as the Mach-1 round clock.

[miketyler 15]

So much for that theory. Aside from the clock and maplight there really is nothing else in that area. Am stumped here.

[70Mach03 12]

So much for that theory. Aside from the clock and maplight there really is nothing else in that area. Am stumped here.

 

I had a new 1970 Grabber Mustang in 1970 (March 1970 build date) and I remember there was a Ford note in the car about the key buzzer being deleted on my car.

[buening 63]

Here ya go Mike, I'm pretty sure they are the same as the Cougars:

 

 

Pic of it installed:

 

 

 

 

 

http://www.cougarpartscatalog.com/d0ab-13150-f.html

 

Also, I believe there were two versions of the key buzzer. One as shown above with only two metal prongs, and another with four prongs. In the picture with it installed, there appears to be a ceramic cover over the rear two prongs. Below is a link to the buzzer than has the four prongs.

 

http://www.ebay.com/itm/1970-Mustang-Mach-1-Grande-Boss-Cougar-Eliminator-ORIG-KEY-WARNING-BUZZER-RELAY-/160710179485?pt=Vintage_Car_Truck_Parts_Accessories&vxp=mtr&hash=item256b12ba9d

 

 

And the stalk it mounts to:

 

http://www.ebay.com/itm/1970-Mustang-Mach-1-Boss-Grande-Cougar-XR7-ORIG-KEY-WARNING-BUZZER-RELAY-BRACKET-/150663930122?pt=Vintage_Car_Truck_Parts_Accessories&vxp=mtr&hash=item231445210a

 

 

Regarding the other plug, I believe there is an extension harness for that one and is definitely for something on the A/C or heater plenum. Are you sure you don't have an A/C harness in a non-A/C car?

[miketyler 15]

Thanks - The buzzers seem to be a pretty rare bird. I had another theory on the other plug. Maybe it was for non AC cars blower motor resistor block.

 

On a heater-only car, is the resistor above the glove box?

 

EDIT: meant to say, my car is an AC car and already has fan switch, temp sensor, and blower resistor connected.

Edited March 1, 2012 by miketyler

[buening 63]

Hmmm, wait. Neither of those two versions have a middle prong as shown in the picture with the buzzer installed. I will see what I can find online

[buening 63]

 

It is right behind the glove box. Above is I think an A/C resistor but below you can see the hole in the heater box at the right where the heater resistor goes. Do you have some random single plug green wires not connected anywhere? Those are a common sign for an A/C harness, although there is a single green plug that goes to the heater switch below the radio on the heater only cars.

 

[miketyler 15]

My car is an AC car and I do have the two lime green wires and they attach to the temp sensor. The heater-only resistor location would sure suggest that's what it's for. Do you think Ford would put resistor plugs for both types in their AC cars?

[buening 63]

Here is a good thread http://www.boss302.com/smf/index.php?PHPSESSID=sicfc2s8nbc5lspem5eji48p56&topic=53886.0

 

and another: http://www.boss302.com/smf/index.php?topic=53900.0

[Mike65 476]

 

It is right behind the glove box. Above is I think an A/C resistor but below you can see the hole in the heater box at the right where the heater resistor goes. Do you have some random single plug green wires not connected anywhere? Those are a common sign for an A/C harness, although there is a single green plug that goes to the heater switch below the radio on the heater only cars.

 

 

Except the plugs Mike is asking about does not match the resister prong arrangement in the heater box.

[miketyler 15]

Unless that lone pin had its own separate ground? Otherwise, the upper arrangement looks like a fit.

 

 

Edited March 1, 2012 by miketyler

[buening 63]

From what I understand (bear with me, been a LONG while since I've looked at mine), the bottom three connectors which are the two vertical and one horizontal below match the connector that Mike is questioning. I believe the upper single post is for a single green wire with black connector, similar to what is shown in the key buzzer picture that the guy circled in yellow. Again, its been forever since I looked at mine and my mach has A/C and the fastback does not....so I easily get them confused!

 

What I'm not sure about is if the resistor in the above picture is for A/C, and the one with the heater only has the 3 prong. Mike I'd recommend you looking at your heater box to see what yours has.

[LoneWolf2U 136]

Unless that lone pin had its own separate ground? Otherwise, the upper arrangement looks like a fit.

 

 

 

The single pin is for the wire that goes directly to the blower motor.

Straight from the 70 wiring manual.

[miketyler 15]

My car is factory AC car. The AC airbox is installed and blower motor, temp sensor, and fan switch are all hooked up. I had labeled these when I pulled the AC box.

 

This extra connector appears to be a resistor block connector for heater-only car. None of the rest of you guys with AC cars have this extra connector? If not my harness may have been converted for AC.

[miketyler 15]

I think I figured it out. AC cars would have plugs for blower resistor blocks for both AC and heater-only plenums.Heater-only cars would only have the one there at the glove box.

Edited March 2, 2012 by miketyler

[buening 63]

Here is that extension harness I was thinking of Mike:

 

http://www.ebay.com/itm/1969-Mustang-Mach1-Shelby-Cougar-ORIG-A-C-SWITCH-WIRING-/150478089656?pt=Vintage_Car_Truck_Parts_Accessories&vxp=mtr&hash=item2309316db8

 

 

I'll have to do some more digging to come up with where it connects to.

 

Edit: Ok I found a picture of the blower for an A/C car. See if you can locate it and the location of the resistor

 

 

 

[miketyler 15]

I think I am probably good here. Everything is connected as it was originally and the extra plug for heater-only resisitor seems to be explained now. Hopefully will be ready for some sparks this weekend

[miketyler 15]

Ok, am re-kindling this fire now that I am dangerously close to closing everything up. I determined that the small square 3lead plug is for the heater-only blower and is present as a spare for AC cars. I have taped it up since I am using factory AC blower.

 

The key warning buzzer plug I still need to find a relay buzzer for. It looks to be a 3 lead unit and book calls it a D0ZB-13150-A "buzzer assy". I see some other part numbers like D0AZ-13150-E and D0AB-13150-F but these only have two leads with a plastic center guide which looks to ensure the buzzer only goes one way.

 

Would one of these other two pin buzzers work?

[miketyler 15]

Got her in and it works great. Oddly enough, the center wire on the plug apparently serves no purpose. Also the key buzzer is only activated when the key is in the ignition and the drivers door is opened.

[buening 63]

Sweet! Since yours has the four posts, I wonder if the other side works the same way? I'd also test those prongs with a voltmeter with key in as well as out to make sure the exposed prongs aren't hot. If so, better cap or tape them up ;)