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Old 04-06-2009   #1 (permalink)
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Default Emergency Flasher Problem

I am still having problems with my emergency flasher. I have the dash instrument cluster out because I am installing an aftermarket replica radio and I do not have the connector circled in yellow in the attached image. I did some brief research on the net and found that only after a late 1965 they used this type of switch. Otherwise, it's hard-wired in to the main harness.

I can't figure out for the life of me whats wrong. My emergency flashers and lighter do not work, but they are on the same circuit so that makes sense. Just can't figure out where to start.

Thanks,

Jeremy
Attached Thumbnails
emergency-flasher-problem-mustang-harness.jpg  
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Jeremy

1965 Mustang Fastback 2+2
289 V8
C4 Automatic

Semper Fi USMC 1999-2004
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Old 04-06-2009   #2 (permalink)
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Hello. You do indeed have that connector. You unplug the turn signal switch at the base of the steering column and plug those two connectors into the ones on the emergency flasher harness. Hope that helps.
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Old 04-06-2009   #3 (permalink)
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Quote:
Originally Posted by Veronica View Post
Hello. You do indeed have that connector. You unplug the turn signal switch at the base of the steering column and plug those two connectors into the ones on the emergency flasher harness. Hope that helps.
Veronica,

I'm pretty certain I dont have those connectors. I replaced my turn signal switch today because my horn contacts were worn down and not contacting the steering wheel. I unplugged them and reinstalled them in to the harness below. Take a look at the pics and let me know if I'm missing something. Again, my wiring harness is not the same as the one I posted in the first post of the thread. If you see this harness in the pics, definitely tell me where.
Attached Thumbnails
emergency-flasher-problem-img_2007.jpg  emergency-flasher-problem-img_2008.jpg  emergency-flasher-problem-img_2009.jpg  
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1965 Mustang Fastback 2+2
289 V8
C4 Automatic

Semper Fi USMC 1999-2004
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Old 04-07-2009   #4 (permalink)
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Hi again. In the third picture, the one of the turn signal switch connectors, you have a two wire connector that connects to the tail light feed. Right behind that is the big, eight wire connector. one of the plugs is on the end of the turn signal switch wires that come out of the steering column, and the other connector is on the main underdash harness. Unplug that and plug the two connectors on the emergency flasher harness into the two ends of that connector that you just unplugged. You have it. I can see it in that third picture trying to hide behind the two wire connector.
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Old 04-07-2009   #5 (permalink)
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Hi again. This might make a little more sense. The first picture is of an NOS Ford underdash harness. It's a 66, but, for what we are talking about, they're the same as a 65. Circled is the connector that you would plug the turn signal switch into.

The second picture is of that same harness with the connector that has been cut off of a turn signal switch plugged into it. This is the set-up that you have right now.

The third picture shows that same harness, that same turn signal connector, and an NOS Ford emergency flasher harness, even out of the same blue box as yours, and not a later version, all plugged together. You just unplug the turn signal switch from the main harness, and plug it into one of the connectors on the emergency flasher harness. The other connector from the emergency flasher harness you plug into the main underdash harness where you just unplugged the turn signal switch. Nothing to it.
Attached Thumbnails
emergency-flasher-problem-underdash-harness-1.jpg  emergency-flasher-problem-underdash-harness-2.jpg  emergency-flasher-problem-underdash-harness-3.jpg  
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Old 04-07-2009   #6 (permalink)
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Quote:
Originally Posted by Veronica View Post
Hi again. This might make a little more sense. The first picture is of an NOS Ford underdash harness. It's a 66, but, for what we are talking about, they're the same as a 65. Circled is the connector that you would plug the turn signal switch into.

The second picture is of that same harness with the connector that has been cut off of a turn signal switch plugged into it. This is the set-up that you have right now.

The third picture shows that same harness, that same turn signal connector, and an NOS Ford emergency flasher harness, even out of the same blue box as yours, and not a later version, all plugged together. You just unplug the turn signal switch from the main harness, and plug it into one of the connectors on the emergency flasher harness. The other connector from the emergency flasher harness you plug into the main underdash harness where you just unplugged the turn signal switch. Nothing to it.
That blue box with the flasher is just something I got off the net. I dont have one.

I just dont understand how mine is currently wired, although it is not working. I understand how to plug in the NOS one in the box, but considering I already have a flasher harness installed, it is not wired the same as the NOS one you are talking about. As showed in my pics, my harness ties in to the main harness and is not separeted in it's own loom.

I have a flasher switch and wires going to/from it, but again, they go in to the main loom as showed in my pictures and do not come out to where my turn signal switch is. I cannot find out where they come out of the main loom at all.

Thanks
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Jeremy

1965 Mustang Fastback 2+2
289 V8
C4 Automatic

Semper Fi USMC 1999-2004
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Old 04-07-2009   #7 (permalink)
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Hi again. My bad. I thought that you were trying to install an emergency signal flasher harness from scratch. Let me check the diagrams over and see what I can come up with. I think that the first thing that I would check would be to see where the break in the power flow is. If the lighter doesn't work also, and the lighter would work if it was getting power. There should be a blue wire with a white stripe coming out of the fuse box that splits into a blue wire with a white stripe and an orange wire with a yellow stripe. The orange/yellow wire supplies the power to flasher pot, which is the first place the power goes for the flashers, while the blue/white wire goes over to the lighter. If you aren't getting power to either one of those things, the problem might be in that wire coming out of the fuse box. Is this the same car that's giving you trouble on the courtesy lights?
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Old 04-07-2009   #8 (permalink)
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Quote:
Originally Posted by Veronica View Post
Is this the same car that's giving you trouble on the courtesy lights?
Yeah, same car. However, my flashers never worked and the courtesy lights did work until I shorted the fuse and blew it by accident. Now I have two problems. They are defiitely not related as far as I can tell.

Thanks
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Jeremy

1965 Mustang Fastback 2+2
289 V8
C4 Automatic

Semper Fi USMC 1999-2004
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Old 04-08-2009   #9 (permalink)
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Hi again. It's sure starting to sound like they are related. It could easily be the case that there's nothing wrong with your emergency flasher wiring,the system might not be getting any power. I would check that blue/white wire that is supposed to be supplying power to the lighter to see if it's doing it's job and has power on it. If no, I would go to where that orange/yellow wire and it part ways and see if I had power there. If no, that's another problem pointing at the fuse box as the culprit, because that's where that blue/white wire originates, and there isn't anything between the fuse box and the spot where the blue/white and orange/yellow wires split off from each other except one unbroken, continuous wire.
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Old 04-19-2009   #10 (permalink)
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Turns out the problem with the flasher was bad contacts at the fuse box. I pulled the contacts out, used the dremel wire wheel, and got all the surface rust off.

Thank you all for your help.
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Thanks,
Jeremy

1965 Mustang Fastback 2+2
289 V8
C4 Automatic

Semper Fi USMC 1999-2004
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Old 04-19-2009   #11 (permalink)
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Hi again. Isn't this fun? Electrical problems are always a hoot to try to figure out.
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