I never saw them on a mustang before. Still I wonder if they might be original? I like the look also, I would keep them.

 

My guess is a '64-'66 T-bird.

 

I still say keep em! Sure goes with the "Sleeper" look....if that's where you're still headed ::
What's it take to remove them and find a part #?

 

Hard to tell from the picture, but I would guess 64 T-bird. I put a set like that on my '64 Galaxie about 35 years ago. Went with the ex-wife.

 

Very 64 T Bird'ish. I would pull one off and check for a Ford part number or (shudder) JC Whitney.

 

I'll try to pull one off tonight and post the numbers. They do look like they're made for the car and were used because the driver (my wife's grandfather) was deaf and needed a reminder his signals were on. He also added a back-up beeper (like UPS trucks use) under the dash in line with the turn signals. Freaked me out when I first drove the car and used them for a turn. Fortunately he put a bypass switch... I don't wish to be deaf.
Daniel

 

Very 64 T Bird'ish. I would pull one off and check for a Ford part number or (shudder) JC Whitney.

Thanks for you and Jeff putting me on the right track. I looked up some 64 T Bird pics and voilà! I actually kind of like the look on the Mustang even though it's not from a Mustang. It is functional and certainly unique.
http://imagehost.vendio.com/preview/da/danschmitt/F7154.jpg
http://imagehost.vendio.com/preview/da/danschmitt/F7153.jpg
http://imagehost.vendio.com/preview/da/danschmitt/F7155.jpg
Daniel

 

i seem to remember there was a dealer option for something like that at one point in the mustangs history. could this be them? don't know but i do remember a dealer "accessory". are these fiber optic, or do they have a bulb?

 

I've also read they were a dealer option.

There are two different versions of those Thunderbird turn signal indicators. In 1964-65, they sat on a ridge on the fender, while in 1966, the top of the fender was flat and the indicators were shaped accordingly. I don't know where they are mounted on your Mustang, but from the picture you showed, it looks like they sit on the outside edge of the fender, for which the 64-65 version would probably fit best.

 

...these?

http://www.hammar.dyndns.org/~djhamma/options/turnsig.jpg

They were an aftermarket accessory, repackaged by Ford for sale through dealers.

And yes, you could also purchase them through J.C. Whitney.