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#324265 - 30th May 2009 7:35pm Corsa electric speedo
Lauraxxx Offline
Addict

Registered: 7th Jul 2007
Posts: 208
Loc: Woodchurch , Wirral
So my boyfriend has changed the speedo dials on his corsa from a cable to an electronic one. he has managed to get everything else working except the actual spedometer and the rev counter seems to be out.

the speed sensor has been put in, 3 cables black, brown an twin coloured wire,

black to live
brown to earth
twin coloured to back of speedo

has anyone actually done a conversion from cable to electronic speedo or does anyone have any ideas??

help

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#324327 - 30th May 2009 11:35pm Re: Corsa electric speedo [Re: Lauraxxx]
Happy Birthday exploding_penguin Offline
Forum Addict

Registered: 11th Nov 2003
Posts: 1943
Loc: sitting at a desk
what corsa is it??
and do u mean digital dash?
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#324329 - 30th May 2009 11:42pm Re: Corsa electric speedo [Re: exploding_penguin]
Pete_Robbo Offline

Keep It Real !!
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Registered: 11th Aug 2008
Posts: 6640
Loc: Wirral
not as yet but you might have to put a new up to date sensor into the gear box (digital sensor) from a newer model smile
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#324362 - 31st May 2009 9:41am Re: Corsa electric speedo [Re: Pete_Robbo]
momo2k9 Offline
Beginner

Registered: 15th May 2008
Posts: 6
Loc: wirral
its a corsa b 1.4 8v an not digital dash just the clocks out a new moddle wth the rev counter as i did not have it on my car wen i put the clock in the rev counter worked with out any wireing need but it not running right an my speedo not workin at all i have the speed sensor out the same car is the clock wired the sensor up black to live an brown to earth an the other to the back of the clock but still no speedo

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#324363 - 31st May 2009 10:02am Re: Corsa electric speedo [Re: momo2k9]
Pete_Robbo Offline

Keep It Real !!
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Registered: 11th Aug 2008
Posts: 6640
Loc: Wirral
ok try a new speedo sensor or i can have a look at it 2moz smile
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#324365 - 31st May 2009 10:34am Re: Corsa electric speedo [Re: Pete_Robbo]
momo2k9 Offline
Beginner

Registered: 15th May 2008
Posts: 6
Loc: wirral
ok that would be good i will try get a sensor from the scrapy or would it be best to buy a new one an have i wired up the wire's right

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#324366 - 31st May 2009 10:48am Re: Corsa electric speedo [Re: momo2k9]
Pete_Robbo Offline

Keep It Real !!
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Registered: 11th Aug 2008
Posts: 6640
Loc: Wirral
try the brown to live and the black to ground smile
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#324373 - 31st May 2009 11:19am Re: Corsa electric speedo [Re: Pete_Robbo]
DavidB Offline
Wiki Guide

Registered: 7th Dec 2003
Posts: 5634
Loc: Bebington, Wirral
Black is switched live, it'll produce a few sparks and burn out if you turn the car on if it's connected to an earth. smile

The electronic speedo runs off the ABS signal which comes from the sensor on the wheel. What reg car is it, and what did the dials come from?
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"C20 LET bang"

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#324383 - 31st May 2009 12:01pm Re: Corsa electric speedo [Re: DavidB]
momo2k9 Offline
Beginner

Registered: 15th May 2008
Posts: 6
Loc: wirral
my car is a L reg an the stuff come off a P reg i think

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#324405 - 31st May 2009 1:35pm Re: Corsa electric speedo [Re: momo2k9]
DavidB Offline
Wiki Guide

Registered: 7th Dec 2003
Posts: 5634
Loc: Bebington, Wirral
It's quite tricky. I used a gearbox transducer from an Astra GTE. It just plugs in the gearbox where the cable goes, and wires to the speedo. It runs on pulses, but it seems to work, only losing about +-5mph at about 60mph. If you've got a fuel/speed computer, it'll mess around with that and it won't work properly. Rev counter gets it's info from the 'green wire', which goes to the ignition coil.

I'd do the above method.

Or this:
http://77.96.230.10/sytemsandsoftwaredev...ronicspeedo.htm
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"C20 LET bang"

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#324423 - 31st May 2009 2:31pm Re: Corsa electric speedo [Re: DavidB]
momo2k9 Offline
Beginner

Registered: 15th May 2008
Posts: 6
Loc: wirral
i think the rev was all ready done as wen i put the clock in an started it the rev showed up but i was goin down the m-waybe hind a car prob doin about 70 an my revs said 2000 so not revin up like it shud the sensor i got out the gearboxan the took my cable out an replayed it with the sensor then wired it up

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#324603 - 1st Jun 2009 10:28am Re: Corsa electric speedo [Re: momo2k9]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
If your full stop key on your keyboard has broken, you can copy and paste these - it will make your posts a bit easier to read wink

. ,
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What If There Were No Hypothetical Questions?

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#324622 - 1st Jun 2009 11:37am Re: Corsa electric speedo [Re: StuyMac]
Sanchez Offline

Wiki Veteran

Registered: 17th Dec 2003
Posts: 8019
Loc: my house
Originally Posted By: StuyMac
If your full stop key on your keyboard has broken, you can copy and paste these - it will make your posts a bit easier to read wink

. ,


Pmsl chew, just cause its your bday it doesn't give you the right to be rude raftl
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Uncertainty or not knowing causes depression, Im happy because I know I'm going to die one day!

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#324626 - 1st Jun 2009 12:07pm Re: Corsa electric speedo [Re: Sanchez]
MissGuided Offline

Awesome
Wiki Guardian

Registered: 18th Jul 2008
Posts: 9995
Loc: Back of the wardrobe
A year older - a year closer to being a grumpy old man raftl He's just practising. happy
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#404616 - 27th Apr 2010 7:13pm Re: Corsa electric speedo [Re: MissGuided]
Neil_c Offline
Smartchild

Registered: 27th Sep 2009
Posts: 417
Loc: birkenhead
You need to be careful on Corsa as there are wires at the back of the speedo that go straight into the ECU. This lets the ECU know how fast the car is going. They actually link in with the back of the radio too so it raises the volume slightly the faster you drive.

My old Corsa's ECU burnt out because some nutter tried to change the radio without the ISO block, taped the "uneeded" wires together and burnt the speed sensor circuitry in the ECU out.

I would plug a tech1 into the diag port and ensure you're getting a spead read off the ECU if it's starts behaving funny or goes into limp mode.

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