Ken,
I just checked one of those german dash bulb/socket combinations, it
measures 9.5mm = .374" across the
base of the socket. It has two tabs sticking out ( 10.5mm
= .413" across the tabs).
It is rated at 1.2W, ther is also a .9W and I think a 1.6W
available, but the 1.2s are the most common ones.
The Osram part number is 2721MF8 ( I'll double check that at the shop
today).
The other bulb I have is a 2721MF, slightly different configuration with a
8.35mm = .33" diameter at the base and 2 metal mounting/contact tabs at
11mm = .433". This one looks like it would fit a slightly thicker
housing/circuit board. It's also a 1.2W.
I'll be out of town for a few days, so I don't have time to check this out
myself right now. If somebody has his telltale panel out, I'll mail the
bulbs to you and you can see if they work
Peter
77 Eleganza II
Colorado
- ----- Original Message -----
From:
To:
Sent: Thursday, January 20, 2000 7:55 AM
Subject: Re: GMC: Telltale Bulb Sockets
> Peter,
>
> The telltale sockets I have are marked on the bottom "Rafi" and "172401".
> Internet search for Rafi was non-productive.
>
> I haven't checked the parts store, but as I recall, 73 and 74 bulbs will
fit.
> They are physically the same but the 73 is a 15,000 hour/0.3 CP bulb &
the
> 74 is a 1000 hour 0.7 cp bulb.
>
> The diameter of the bulb holes in the other instruments is 0.5"; the
telltale
> holes are 0.375.
>
> The Sylvania/Osram web site was of no help -- they don't have a complete
> catalog on line. Nor could I find a source thru numerous searches --
Calterm
> is one of the socket suppliers for the 0.5 sockets but I can't reach
> Calterm.com.
>
> Maybe with this information someone can come up with something.
>
> Ken Henderson
>
I just checked one of those german dash bulb/socket combinations, it
measures 9.5mm = .374" across the
base of the socket. It has two tabs sticking out ( 10.5mm
= .413" across the tabs).
It is rated at 1.2W, ther is also a .9W and I think a 1.6W
available, but the 1.2s are the most common ones.
The Osram part number is 2721MF8 ( I'll double check that at the shop
today).
The other bulb I have is a 2721MF, slightly different configuration with a
8.35mm = .33" diameter at the base and 2 metal mounting/contact tabs at
11mm = .433". This one looks like it would fit a slightly thicker
housing/circuit board. It's also a 1.2W.
I'll be out of town for a few days, so I don't have time to check this out
myself right now. If somebody has his telltale panel out, I'll mail the
bulbs to you and you can see if they work
Peter
77 Eleganza II
Colorado
- ----- Original Message -----
From:
To:
Sent: Thursday, January 20, 2000 7:55 AM
Subject: Re: GMC: Telltale Bulb Sockets
> Peter,
>
> The telltale sockets I have are marked on the bottom "Rafi" and "172401".
> Internet search for Rafi was non-productive.
>
> I haven't checked the parts store, but as I recall, 73 and 74 bulbs will
fit.
> They are physically the same but the 73 is a 15,000 hour/0.3 CP bulb &
the
> 74 is a 1000 hour 0.7 cp bulb.
>
> The diameter of the bulb holes in the other instruments is 0.5"; the
telltale
> holes are 0.375.
>
> The Sylvania/Osram web site was of no help -- they don't have a complete
> catalog on line. Nor could I find a source thru numerous searches --
Calterm
> is one of the socket suppliers for the 0.5 sockets but I can't reach
> Calterm.com.
>
> Maybe with this information someone can come up with something.
>
> Ken Henderson
>
