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Roberto, in Italy wrote me to ask if I could help him find a part for his Unity Co. "winged" spotlight on his beautiful '60 Tbird. He has not been able to turn it recently. Apparently, a gear that causes the spotlight to turn different directions has stopped working. Carl - partsetal did not have any parts for it. So, I called my contact, Ben, at Unity Mfg. Co., and he, as usual, was a wealth of information. This information might be very helpful to those of you who also have this problem, or might in the future. Here is what I learned.
First of all, ALL their Unity lights that have that goose neck connection that the shaft attaches to under the spotlight shell have that gear in the goose neck that goes into the light case shell. That is Part Nr. 6403-A. So it does not matter if it is a round light, a square one with a round rear view mirror, or the winged version like his with the square rear view mirror. That gear is all the same.
However.... There are FOUR gears in that light unit! There is that one which goes into the light shell casing. There is one on the end of the shaft that goes into the goose neck piece that turns and causes the gear in the goose neck to turn. He told me that your shaft for a Tbird with a HL-1 or a H1-FM spotlight mounted on the fender should be 15 1/2" long, measured from the center of the pistol grip to the bottom center of the goose neck. I will include a picture of this. It is the bottom listing you look at under the letter "C" - 15 1/2". This shaft with the gear on the end is Part Nr. 6427-C and you will see it on the web page that shows the 105-6PartsSheet.pdf file. He said that only the 6427-C shaft at 15 1/2" will work on a '58-'60 Tbird.
The third gear is in the pistol grip handle and it is Part Nr. 6405. It is at the top end of the handle and this is the one gear that he says seems to wear more than the others. He said it might be this gear that is stripped or has broken teeth in it. If either of these four gears becomes worn or broken it won't turn the other gears.
The fourth gear is on a shaft that goes in the bottom of the pistol grip and it looks like it matches up with gear Nr. 6405. The Part Nr. for this last gear is 6122, BUT they no longer have it. BUT they do have Part Nr. 5593 which is the same, EXCEPT that it might be a little bit longer and you might have to cut off a small piece off the length of it. You can see all these parts on the 105-6 Parts Sheet.
Now the good thing is that all these parts are available from them still! So are the light bulbs! It is Part Nr. U-H7635 for $47.92. They are also available through GE, Part Nr. GE H7635 (halogen). I am including the link to each of these four gears which will show you what they look like, the cost, etc.. He says that they can be ordered using your PayPal account. They WILL ship overseas. Here are the links, and as you look at them in Acrobat Reader, you can zoom in or use Ctrl + or - and see the Parts Sheet better. If you don't have a .pdf reader file, you can get one at Acrobat Reader website for free.
http://shop.unityusa.com/assets/imag...PartsSheet.pdf
http://shop.unityusa.com/6427-C-Rod-...bly_p_540.html
http://shop.unityusa.com/search.asp?keyword=6405&search.x=22&search.y=5
http://shop.unityusa.com/search.asp?...x=0&search.y=0
http://shop.unityusa.com/search.asp?...=11&search.y=5
For the left fender mounting bracket kit the Part Nr. for 1958-1960 Tbirds is 130. However, they also have a Part Nr. 88 listed for the 1958 Tbird. There was NO right hand mounting bracket for the '58-'60 Tbirds. If you want to mount a passenger side spotlight, I can tell you how others did it.
http://shop.unityusa.com/130-Install...Kit_p_841.html
http://shop.unityusa.com/88-Installation-Kit_p_835.html
If I have it right, I think they have most of the parts in stock listed on that 106-6 PartsSheet list! I know they have the mounting brackets in stock.
Roberto has several options. There is a junk Unity spotlight he can buy I saw and told him about for not much money and take gears from it, if they are good. The four gear parts in it should work on your light Ben said. As long as the light has the same goose neck on it that your light has, they should work. They used the same goose neck on all their HL-1 or H1-FM and other series of spotlights that look like what Roberto has or the round light versions.
He can pull that top gear in the pistol grip handle on his light and see if that is the culprit and if the one from the junk light is good, put it in and replace the one that is in there. If that looks good, he can inspect the other gears from the junk light and see if any of them are shot. If not, he could replace other gears in his light from that junk light and hopefully fix the problem
Or he could order all four gears directly from Unity Mfg Co. and have all new gears in his light! Your choice! I asked Roberto to let me know which way he is going to go. BTW, in searching for another HL-1 or H1-FM, on eBay, I saw them for sale from between $100-$600 as I recall.
I hope this will be a big help to Roberto and anyone else who has problems with these spotlights. Here is are some pix. The first one is of the gear in the goose neck that he thought might be the culprit. The second is information on the length of the shaft. The third pic is of a HL-1 (or H1-FM) (the L is for Lincoln, but many of us have used the HL-1 on our Tbirds, or the H1-FM (Ford/Mercury, also used on Edsels).
First of all, ALL their Unity lights that have that goose neck connection that the shaft attaches to under the spotlight shell have that gear in the goose neck that goes into the light case shell. That is Part Nr. 6403-A. So it does not matter if it is a round light, a square one with a round rear view mirror, or the winged version like his with the square rear view mirror. That gear is all the same.
However.... There are FOUR gears in that light unit! There is that one which goes into the light shell casing. There is one on the end of the shaft that goes into the goose neck piece that turns and causes the gear in the goose neck to turn. He told me that your shaft for a Tbird with a HL-1 or a H1-FM spotlight mounted on the fender should be 15 1/2" long, measured from the center of the pistol grip to the bottom center of the goose neck. I will include a picture of this. It is the bottom listing you look at under the letter "C" - 15 1/2". This shaft with the gear on the end is Part Nr. 6427-C and you will see it on the web page that shows the 105-6PartsSheet.pdf file. He said that only the 6427-C shaft at 15 1/2" will work on a '58-'60 Tbird.
The third gear is in the pistol grip handle and it is Part Nr. 6405. It is at the top end of the handle and this is the one gear that he says seems to wear more than the others. He said it might be this gear that is stripped or has broken teeth in it. If either of these four gears becomes worn or broken it won't turn the other gears.
The fourth gear is on a shaft that goes in the bottom of the pistol grip and it looks like it matches up with gear Nr. 6405. The Part Nr. for this last gear is 6122, BUT they no longer have it. BUT they do have Part Nr. 5593 which is the same, EXCEPT that it might be a little bit longer and you might have to cut off a small piece off the length of it. You can see all these parts on the 105-6 Parts Sheet.
Now the good thing is that all these parts are available from them still! So are the light bulbs! It is Part Nr. U-H7635 for $47.92. They are also available through GE, Part Nr. GE H7635 (halogen). I am including the link to each of these four gears which will show you what they look like, the cost, etc.. He says that they can be ordered using your PayPal account. They WILL ship overseas. Here are the links, and as you look at them in Acrobat Reader, you can zoom in or use Ctrl + or - and see the Parts Sheet better. If you don't have a .pdf reader file, you can get one at Acrobat Reader website for free.
http://shop.unityusa.com/assets/imag...PartsSheet.pdf
http://shop.unityusa.com/6427-C-Rod-...bly_p_540.html
http://shop.unityusa.com/search.asp?keyword=6405&search.x=22&search.y=5
http://shop.unityusa.com/search.asp?...x=0&search.y=0
http://shop.unityusa.com/search.asp?...=11&search.y=5
For the left fender mounting bracket kit the Part Nr. for 1958-1960 Tbirds is 130. However, they also have a Part Nr. 88 listed for the 1958 Tbird. There was NO right hand mounting bracket for the '58-'60 Tbirds. If you want to mount a passenger side spotlight, I can tell you how others did it.
http://shop.unityusa.com/130-Install...Kit_p_841.html
http://shop.unityusa.com/88-Installation-Kit_p_835.html
If I have it right, I think they have most of the parts in stock listed on that 106-6 PartsSheet list! I know they have the mounting brackets in stock.
Roberto has several options. There is a junk Unity spotlight he can buy I saw and told him about for not much money and take gears from it, if they are good. The four gear parts in it should work on your light Ben said. As long as the light has the same goose neck on it that your light has, they should work. They used the same goose neck on all their HL-1 or H1-FM and other series of spotlights that look like what Roberto has or the round light versions.
He can pull that top gear in the pistol grip handle on his light and see if that is the culprit and if the one from the junk light is good, put it in and replace the one that is in there. If that looks good, he can inspect the other gears from the junk light and see if any of them are shot. If not, he could replace other gears in his light from that junk light and hopefully fix the problem
Or he could order all four gears directly from Unity Mfg Co. and have all new gears in his light! Your choice! I asked Roberto to let me know which way he is going to go. BTW, in searching for another HL-1 or H1-FM, on eBay, I saw them for sale from between $100-$600 as I recall.
I hope this will be a big help to Roberto and anyone else who has problems with these spotlights. Here is are some pix. The first one is of the gear in the goose neck that he thought might be the culprit. The second is information on the length of the shaft. The third pic is of a HL-1 (or H1-FM) (the L is for Lincoln, but many of us have used the HL-1 on our Tbirds, or the H1-FM (Ford/Mercury, also used on Edsels).
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