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OrangeMax
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Greetings, Here is the views of the speedometer as requested

*driving*Max

OrangeMax
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Does anyone know the best way to remove the pins from the 8 pin speedometer plug?

*driving*Max

John Vine
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Thanks for the photos.  That's what Caerbont call an Electronic Programmable Speedometer with a 6-digit calibration code (as described in #6).

I've never tried to extract a pin from the speedo connector.  But assuming it works in the same way as an Econoseal connector, insert a thin-bladed screwdriver (a jewellers' one would be ideal) in the space under the pin (see photo) to lift a little retaining tab inside.  Pull the wire from the back of the plug at the same time and the pin should come out.

 

Re wiring, I've just checked my own speedo plug (2008 Duratec) and it's wired as shown in #10.

JV

 

John Vine
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Did you manage to display the calibration code? 

JV

OrangeMax
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Greetings John,

Actually no. I tried the procedure and never got the code to display. It will display the miles, trip miles and I can zero out the trip miles, but I cannot get the code to show. I've tried this on both speedometers that I have without success. 

I have been able to move the signal wire from pin 6 to pin 7. Weather permitting I will test that change out today.

M

*driving*Max

L66TEY
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Thank you John - for posting the link to "Speedometers", I'll now be able to address the jumpy speedo and stuck at zero needle issue. 

Chris

John Vine
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Re #17:

I hope the guide helps. Do let us know if you fix the problem.

JV

John Vine
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Re #16:

That's very odd.  Are you following Caerbont's procedure correctly?  It's set out on page 2 of this document. Use Method (i).

As you have a KPH speedo, you'll need to use the appropriate code in the KPH table at the end of the Speedometers guide.

Looking forward to the results of the road test.

JV

 

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Re #16:

Weather permitting I will test that change out today.

If the weather's inclement, you could always put the rear of the car on axle stands, select top gear and (with care!) start the engine.

JV

OrangeMax
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So the saga of my speedometer continues...John, thank you for reminding me of the recalibration procedure for the speedometer. It's amazing how following the instructions works...sometimes. The code displayed was 008359. It did not match anything on the chart so I reset the code to 024581 (Avon CR500 205/55 x 13). I ran the car on stands in gear, no luck. It would not display any speed. I tried the signal wire both in Pin #6 and Pin#7 without success. I again checked to see if I was getting getting pulses at the sensor. The sensor would light up on all 42 teeth of the trigger wheel. I checked the voltage signal wire at the speedometer. it would range from .4V (no light)  to .7V (light on). So I'm really scratching my head on this puzzle.

I even tried a second speedometer I acquired. It also did not display speed. the second unit was curious as it would not let me access the recalibration feature. I have included pictures of it so maybe someone can say if this particular version omits recalibration?

So any thought of what I can try now? If I can't get this working I'm considering having the speedometer converted to GPS. If that is the case I'd like to find a silver faced speedometer in MPH. Anyone have one they don't want sitting on their shelf?

Regards, OM

*driving*Max