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  #1  
Old 04-21-2017, 08:15 PM
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Hi Gang, I was out driving in the Bird and the signals were fine, then half way home I noticed they stopped working.

Is there a fuse or do you think the flasher packed it in. The dash indicator isn't going on and staying on, there's nothing.

Thoughts?
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Old 04-21-2017, 08:21 PM
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Do you have a wiring diagram?
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Old 04-21-2017, 08:41 PM
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Quote:
Originally Posted by simplyconnected View Post
Do you have a wiring diagram?
I just found one on the TRL, I see an inline fuse someplace after the flasher, I'll climb around under the dash, see if I can find it.

You'd think nobody had invented a fuse box, so confusing.
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Old 04-21-2017, 09:14 PM
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I believe that flasher fuse is on the rear of your headlight switch, as shown in the diagram. It is NOT in-line.
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Old 04-22-2017, 02:55 AM
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Quote:
Originally Posted by simplyconnected View Post
I believe that flasher fuse is on the rear of your headlight switch, as shown in the diagram. It is NOT in-line.
I don't want to argue with the guru of Squarebirds but I think it's on the green and ylo wire coming out of the switch, but I'll check the fuses on the switch first and report back. Would make it easier if it's the switch, I know where that is!!!
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Old 04-22-2017, 03:42 AM
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Quote:
Originally Posted by sidewalkman View Post
I don't want to argue with the guru of Squarebirds but I think it's on the green and ylo wire coming out of the switch, but I'll check the fuses on the switch first and report back. Would make it easier if it's the switch, I know where that is!!!
This is an open forum open to the internet. We want to know of any deviation from "factory stock."

Our prints show green with a yellow trace (Green-Yellow) start at the headlight switch (D-post). That wire feeds both door switches with power.

You refer to 'switch' but I don't know which one. If you are looking for a 1960 Thunderbird turn signal unit wire it should be Blue. Power for the flasher unit starts as orange-yellow at the key switch and continues to the headlight switch fuse, then to the flasher unit. After the flasher unit, the wire continues to the steering column connectors (look for a blue wire and blue bullet connector).

I have to say, a blown fuse in the middle of a trip is very rare. Fuses usually blow when something happens to cause overcurrent. - Dave
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Old 04-22-2017, 11:01 AM
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The fuse is on the headlight switch and a short one. I had to tape (insulate) the flasher unit connections because they touched metal and shorted out once accidently. That killed the brake lights and therefore the turn signals, I think.

Dean
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Old 04-22-2017, 12:11 PM
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I had exactly the same thing happen as Dean.

Does the flasher unit have a physical home or is it just kind of on its own? Mine was just stuffed up in the wiring jumble and thus free to move around.

John
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Old 04-22-2017, 12:30 PM
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The flasher unit clamps to the side of the dash frame behind the instrument panel on the right side. You can see it in the picture where the white tabs are. Trying to get it back in place is nearly impossible so I just tape it where it's more convenient and it won't touch any metal.

John
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Old 04-22-2017, 05:29 PM
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It's important to note, Ford kept the same mounting place for the flasher unit but made a wiring change in the Squarebird after 1958.

Flasher Unit Power
1958 Squarebirds had a headlight switch with ONE fuse holder attached to the back. Let's start with power at the key switch (A-terminal, Orange-Yellow wire) that feeds the in-line fuse. The fuse feeds the flasher unit, then on to the steering column bullet connector (Blue).

1959 and 1960 Squarebirds had a headlight switch with TWO fuse holders attached to the back. Many vendors only sell this switch, today. It doesn't hurt to have that 'extra' fuse holder and it works for all Squarebirds.

Wiring for these two years is similar to the '58 in that, power still comes from the key switch (A-terminal, Orange-Yellow wire), then it continues to the fuse on the rear of the headlight switch. The fuse feeds the flasher unit, then on to the steering column bullet connector (Blue).

This change is very minor but still different.
Flasher unit power is different from brake light power. In all years, your steering column is fed from two different power sources; one from the brake light circuit and the other from the flasher unit circuit. Remember, turn signals interrupt brake lights.

Stop Switch Power
1958 and 1959 Squarebirds started their stop switch power at the headlight switch (A-terminal, Green wire). It fed the stop (pressure) switch. The 'A' terminal is already protected by the fuse on the back of the headlight switch. The brake switch feeds the steering column through a (Green) wire and bullet connectors.

1960 Squarebird brake lights are wired differently. They have a separate in-line fuse mounted right next to the key switch. Power starts at the key switch (B-terminal, Green wire) that feeds the stop switch. The fuse feeds the steering column (Green ) bullet connectors.

Steering Column wires
For all Squarebird troubleshooting convenience, ALL stop and signal lights can be tested at the steering column bullet connectors. Simply follow the wiring colors in the diagram:

Power
from brake switch - Green
from flasher unit - Blue

Front Lamps
RH Signal - White-Blue
LH Signal - Green-White

Rear Lamps
RH Stop/Signal - Orange-Blue
LH Stop/Signal - Green-Orange

There are two more bullet connectors
horn button - Blue-Yellow
PRNDL lamp - Blue-Red
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