Smiths electronic speedo problem

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Thanks Eddie! I appreciate the encouragement from you and Kiwi!

I have a good friend that wants to buy my old OEM tach/speedo - I was planning to say "yes," but now I think I'll say, "Wait until I have the new ones on/operating properly and then we'll talk!" ;)
 
MexicoMike said:
I have a good friend that wants to buy my old OEM tach/speedo - I was planning to say "yes," but now I think I'll say, "Wait until I have the new ones on/operating properly and then we'll talk!" ;)
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Doing anything other would be tempting fate...

And yer don’t wanna be doing that...!
 
Installed Smith's electric instruments using this wiring diagram http://www.puca.co/images/Smiths-A4-wiring2.jpg
All went well but speedo would not count rear wheel revolutions in Drive to Set mode. Was using Daytona 3 wire sender. Stock sender wasn't working, found out it needed an extension on the square cable drive. Still no indication to speedometer. Replaced Daytona with a 2 wire sender from Andover part # 06.7904/e still no indication. Took square brass drive extension from Daytona and put on the 2 wire sender, success at last. Did set PPU at 800 but don't know if that was necessary or not. Also this is on a MK3 speedometer gearbox.
 
Keith Clark said:
Installed Smith's electric instruments using this wiring diagram http://www.puca.co/images/Smiths-A4-wiring2.jpg
All went well but speedo would not count rear wheel revolutions in Drive to Set mode. Was using Daytona 3 wire sender. Stock sender wasn't working, found out it needed an extension on the square cable drive. Still no indication to speedometer. Replaced Daytona with a 2 wire sender from Andover part # 06.7904/e still no indication. Took square brass drive extension from Daytona and put on the 2 wire sender, success at last. Did set PPU at 800 but don't know if that was necessary or not. Also this is on a MK3 speedometer gearbox.
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I gave up on the MK 111 and Derek Wilson set it up right for me. Still don't understand the calibrations so I don't go there. Instructions a fuzzy nightmare cheapo photocopy. Yes they let in water.
 
Torontonian said:
I gave up on the MK 111 and Derek Wilson set it up right for me. Still don't understand the calibrations so I don't go there. Instructions a fuzzy nightmare cheapo photocopy. Yes they let in water.
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After getting the calibration correct, the speedo is working beautifully and love the smooth needles.
 
Torontonian said:
I gave up on the MK 111 and Derek Wilson set it up right for me. Still don't understand the calibrations so I don't go there. Instructions a fuzzy nightmare cheapo photocopy. Yes they let in water.
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If the water is coming in via the Bezel, the recent post on how to do it on a lathe whilst putting pressure on the glass to make the rubber seal work is worth a look.
 
Bernhard said:
If the water is coming in via the Bezel, the recent post on how to do it on a lathe whilst putting pressure on the glass to make the rubber seal work is worth a look.
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Do you have a link to this post? I am not having any luck searching for it. Thanks!
 
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