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CA77 Lamp conversion

Charging System, Wiring, Lighting
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Seadog
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Location: Cape Cod, MA

Post by Seadog » Wed Mar 04, 2015 10:19 am

hotrodhendrix wrote:Nice! Any reason you decided not to go led?

~James
I haven't made a firm decision about the bulb type yet. I need to get to the auto parts store. I would like a cooler bulb and I think an LED would be, but I have to find one that would fit into the headlight bucket without hitting the speedometer housing. Some that I've seen online have a rather large housing. I'd also like to find a mounting ring/socket for whatever bulb I use so that it can be changed easily.

If you have suggestions, I'd like to hear them.

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G-Man
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Post by G-Man » Wed Mar 04, 2015 12:59 pm

There might be something here.....

http://www.norbsa02.freeuk.com/goffyleds.htm

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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Seadog
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Joined: Thu Dec 25, 2014 9:54 am
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Post by Seadog » Wed Mar 04, 2015 1:21 pm

G-Man wrote:There might be something here.....

http://www.norbsa02.freeuk.com/goffyleds.htm

G
Great link. Thank you.

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Seadog
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Post by Seadog » Sat Mar 14, 2015 3:25 pm

I've finally received an couple of H4 bulb holders and was able to work on this today. The holders were very difficult to find. I tried the local salvage yard, but they would not help unless I told them exactly which vehicle had the holders I wanted. I didn't know, so I went back to the Internet and found some for an old Ford truck light retrofit.

The bulb holder was made to be installed inside the headlight bucket with the bulb held opposite the normal way. I had to drill it out so that the bulb would fit through it.
Attachments
Holder again.  Not aligned though.
Holder again. Not aligned though.
IMG_0516.JPG (193.21 KiB) Viewed 4409 times
Holder - friction fit
Holder - friction fit
IMG_0515.JPG (200.04 KiB) Viewed 4409 times
Rough hole cut in headlight backing
Rough hole cut in headlight backing
IMG_0514.JPG (200.44 KiB) Viewed 4409 times
Unmodified and modified holders
Unmodified and modified holders
IMG_0513.JPG (228.98 KiB) Viewed 4409 times
Unmodified bulb holder
Unmodified bulb holder
504858.jpg (140.88 KiB) Viewed 4410 times

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Seadog
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Joined: Thu Dec 25, 2014 9:54 am
Location: Cape Cod, MA

Post by Seadog » Sat Mar 14, 2015 3:33 pm

The holder, then the bulb with the holder with were trial fitted into the headlight bucket. I believe that it will all work, but the light bulb tabs will need to be bent down 90 degrees.

Now I need to permanently fasten the holder to the back of the headlight. I haven't decided whether to do that with solder or heat resistant sealant. I prefer solder, but have to test my steel soldering skills on some scrap first.

Next update with a working bulb.
Attachments
In headlight bucket with bulb,
In headlight bucket with bulb,
IMG_0518.JPG (264.44 KiB) Viewed 4401 times
Trial fit of bulb with holder only into the headlight bucket.
Trial fit of bulb with holder only into the headlight bucket.
IMG_0517.JPG (229.84 KiB) Viewed 4399 times

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G-Man
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Post by G-Man » Sat Mar 14, 2015 4:24 pm

Excellent project and great photographs. Thanks for sharing those.

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

mike1969
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Joined: Sat Feb 06, 2010 6:53 pm
Location: w.pa.

lighting

Post by mike1969 » Sat Mar 14, 2015 5:53 pm

Very nice work Seadog!

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