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Albertoprop17
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Joined: March 15, 2016
Posts: 196
Location: Valencia (Spain)
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 Posted: Tue Mar 26, 2019 6:00 am Post subject: Help with VDO rpm tachometer |
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Hi everyone, I purchased this original vdo rpm gauge for my 54 oval beetle
I don't have the wiring diagram for it, but it has the marks for +, signal and -
I can read these on the reverse:
Made in Germany
28 79
16000
10.63
On the right top side, is marked this:
53
9.63
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'54 vintage speed beetle slow project
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EverettB 
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Joined: April 11, 2000
Posts: 69809
Location: Phoenix Metro
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| Posted: Tue Mar 26, 2019 8:14 am Post subject: Re: Help with VDO rpm tachometer |
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Are you asking how to hook it up?
+ goes to power
1 goes to the "1" terminal on the coil
- goes to a ground connection
Ground is the connection on the far right without the black surround
The terminal at the top of the gauge is for the light.
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Albertoprop17
Samba Member
Joined: March 15, 2016
Posts: 196
Location: Valencia (Spain)
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| Posted: Tue Mar 26, 2019 8:35 am Post subject: Re: Help with VDO rpm tachometer |
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| EverettB wrote: |
Are you asking how to hook it up?
+ goes to power
1 goes to the "1" terminal on the coil
- goes to a ground connection
Ground is the connection on the far right without the black surround
The terminal at the top of the gauge is for the light. |
That is what I was thinking, thanks!
If I am right, it is dated in 9.63-10.63, but I don't know what the other numbers mean.
One question… How can I remove the light? It's tight and I don't want to break anything
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'54 vintage speed beetle slow project
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EverettB
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Joined: April 11, 2000
Posts: 69809
Location: Phoenix Metro
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| Posted: Tue Mar 26, 2019 5:03 pm Post subject: Re: Help with VDO rpm tachometer |
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The 9.63 / 10.63 are date stamps for when it was made.
The other numbers I do not know.
The light should just pull out but it could be stuck.
It's probably best to try to pull it straight out but:
If you can grab it lightly you could try rotating the bulb holder by the circular outer edge but it's easy to smash or deform it.
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Albertoprop17
Samba Member
Joined: March 15, 2016
Posts: 196
Location: Valencia (Spain)
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| Posted: Wed Mar 27, 2019 5:01 am Post subject: Re: Help with VDO rpm tachometer |
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The light is very tight but it come out with no problem. It is 12v 2w f6.
I will post a video when I have the tach working 
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alanhall
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Joined: February 18, 2006
Posts: 115
Location: Northern California
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| Posted: Wed Mar 27, 2019 7:42 pm Post subject: Re: Help with VDO rpm tachometer |
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| I would think that you need to find out what this is out of as I believe calibration depends on if it for a 4, 6 or 8 cylinder engine. |
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Albertoprop17
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Joined: March 15, 2016
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Location: Valencia (Spain)
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