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Mechanical to Electrical Speedo conversion

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Old 01 December 2010 | 12:15 PM
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Default Mechanical to Electrical Speedo conversion

Has anyone done this im trying to figure out what I need as to get as im trying to convert my dash from uk pre-facelift to JDM facelift
Old 01 December 2010 | 01:07 PM
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VERY ball-achy to do, not worth the time, tbh.
Old 01 December 2010 | 01:44 PM
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Is it actually possible though its a bit of a winter project for me so dont mind it being time consuming and fiddly
Old 01 December 2010 | 06:16 PM
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Possible? I think so, but I've not done it myself.

It may involve a full DASH change since the instruments differ in shape, which in turn would need the later doorcards..........you see where this is going?

And then the wiring?.

By the time you've done, would it maybe be cheaper to get a slightly newer car?
Old 01 December 2010 | 06:26 PM
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Yeah I see where its going ive sourced most of the dash bits no doorcards yet not sure if they will need changing straight away or just later to match.

The only thing im struggling with is getting a electrical speed signal instead of mechanical.
How do people get around this when they fit newer gearboxes to cars which have the mechanical type and the box has the electrical type.
Old 01 December 2010 | 07:34 PM
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Originally Posted by jason_2801
Yeah I see where its going ive sourced most of the dash bits no doorcards yet not sure if they will need changing straight away or just later to match.

The only thing im struggling with is getting a electrical speed signal instead of mechanical.
How do people get around this when they fit newer gearboxes to cars which have the mechanical type and the box has the electrical type.
I agree with alcazar it is not worth it, i have not done one myself but i know it is alot of aggrivation and you will regret starting it imo. Good luck if you do go ahead though
Old 01 December 2010 | 08:07 PM
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Maybe its not I can always go back to standard if it doesnt work out. Still looking for a way to change the speedo to electrical anyone got any ideas???
Old 01 December 2010 | 08:39 PM
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all you will need is a speed sensor from a facelift gearbox. they do 2 and 3 wire the 3 wire has an earth, ing feed, and the speed signal. the 2 wire has a speed sgnal wire and an earth that comes from the back of the clocks.
Old 01 December 2010 | 08:44 PM
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Cheers sounds easy enough has anyone got one lieing about they want to sell me
Old 06 December 2010 | 02:54 PM
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Well my V5 clocks turned up today so I thought I would take out my old clocks and see how much difference their was and to my surprise my old clocks don't have a mechanical speedo feed its electrical so this should make my changing of the dash a bit easier as I have a complete dash coming to me with a wiring loom from a uk V5 so hopefully fitting shouldnt be as much of a problem.
Old 06 December 2010 | 03:45 PM
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on the same subject - does anyone know where abouts i can find the speed sensor? maybe a pic showing where abouts on the gearbox? i want to check mine out on my bugeye STI JDM. the speedo works then cuts out at times..
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