john_sri
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Registered: 19th Nov 01
Location: North shropshire Drives: A car
User status: Offline
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Has any one got a diagram of the wires for a corsa b mfd display?
or a list of what each wire does!
just really need to know which is for the live, earth, perm feed, etc AND just a list of the radio ones, dont need to know what they do as they will be removed from it!
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JpA
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Registered: 23rd Jul 03
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its in the hayes manual.
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ed
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Registered: 10th Sep 03
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In German! 
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JpA
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Registered: 23rd Jul 03
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and if you look at the bit at the begenning of the section it tells you what the german colour means!
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john_sri
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Registered: 19th Nov 01
Location: North shropshire Drives: A car
User status: Offline
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yeah but does anyone know off and what wire does what, i aint got a corsa wiring diagram coz im not john, im a mate using his account on my pc! need it to wire it into a diff car!
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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The red is a 20a fused permanent live and the Black is a 10a fused ignition live.
Red/Grey
Brown/Red
Brown/Grey
Brown/Black
^^ all for standard vauxhall headunit display, not usable if you are using an aftermarket headunit.
Blue/Red is from the speedo on the dash
Grey/Black and Grey/Green are from the light switch. The Grey/Black wire controls the dimming on the display when you turn the lights on. The Grey/Green is the supply from the MFD which goes to a variable resistor when the lights are switched on which in turn sends current via the Grey/Black to dim the display (phew)
Blue and Blue/White are for the temperature sensor and your Brown is the ground.
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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john_sri
Member
Registered: 19th Nov 01
Location: North shropshire Drives: A car
User status: Offline
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thanks for that mate! prob wont wire the dimming up.... or try connecting it to the feed, not the return one!
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James@CCC
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Registered: 10th Nov 03
Location: Eaton Bray, Bedfordshire
User status: Offline
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just wondering y it needs a signal from the speedo. and will this be there even if the car has a mechanical speedo
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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The MFD is also part of a diagnostic system. When you hold both buttons down while driving on the MFD it will tell you some information and give you a speed, I still dont know why it doesnt give you a speed above 55kmh.
The wire also goes to other places such as the ABS system
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James@CCC
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Registered: 10th Nov 03
Location: Eaton Bray, Bedfordshire
User status: Offline
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really?! didnt no that! wow, gonna play about next time im out 
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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It will work while stationairy too except your speed will be 0kmh
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James@CCC
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Registered: 10th Nov 03
Location: Eaton Bray, Bedfordshire
User status: Offline
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ooo, ill go and play now then 
its amazing, ive owned the car over a year and only just found this out. It took me 8 months before i realised i could turn on the inerior light wthout opening the door!
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James@CCC
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Registered: 10th Nov 03
Location: Eaton Bray, Bedfordshire
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any way you could programme this so that it shows you the speed constantly, and in mph not kph, it just did it for about 5 secs for me. and also wot is the screen shown after allabout? Is it just lighting up all possible spaces so u can check they r working.
can u get it to show you anything else, or just speed
[Edited on 24-02-2004 by corser]
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M2RTY
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Registered: 25th May 01
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something ive always wanted to do but i have no harness there, wiring them all up would be a nightmare!
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James@CCC
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Registered: 10th Nov 03
Location: Eaton Bray, Bedfordshire
User status: Offline
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not particularly, pernament live, ignition live and earth. Then a wire to temp. sensor and a wire back.
You dont need the other wires it just means it wont dim, come on when ignition is off yet lights r on, or show the speed.
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ed
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Registered: 10th Sep 03
User status: Offline
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M-Tec make a thingy that displays a load of stuff, speed included, on the MFD. Unfortuatly it only shows speeds in Km/h...
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James@CCC
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Registered: 10th Nov 03
Location: Eaton Bray, Bedfordshire
User status: Offline
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yea i seen that, looks cool, but its like 100 quid
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Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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tis £159 from PVD
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