reecegsi
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Registered: 16th Mar 11
Location: birmingham
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Hello
i am converting my sxi to a c20xe im having trouble with wiring i remember seeing a guide of some sort for this model as its different to others cuz of loom in bay and i cant figure out what to do with the left over wires
any help or links to guides for this model conversion much appreciated
thanks
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Linch
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Registered: 4th May 06
Location: Whickham, Tyne and Wear
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This seems to be a regular thing coming up now.
So Guide to fit a c20xe into 1.0 12v or 1.2 16v Corsa
After removal of the original engine, the ecu plug is in the bay like so...
Along with another plug which runs injectors on the original engine and had oil pressure wire on it.
Really thick Red/Blue Is not used.
Blue/green oil pressure to xe one
Now depending on the xe loom you have, most have the connections inside the car, otheres in the engine bay.
You need to cut this plug off and pull the wires back through into the car from in the drives footwell under the dash like so...
I would leave the thin black wire off this plug in the bay, as thats where the ignition live is on the xe loom.
On this loom you should have:
Blue/red
Blue/red Slightly thicker.
Brown/white
Brown/red
Brown/black
Brown
Red/blue
Red
Brown/blue
Black
Green (Not pictured)
Blue (Not pictured)
And your xe loom should look like this if its got its original plugs, most don't nowadays.
So now here we go..
Wiring colours are as follows:
XE loom
Green - revcounter feed, wire to green on corsa
Brown/Blue - ECU light, match to corsa loom
Brown/White - Diagnostics, match to corsa loom
Brown/Yellow - Diagnostics, brown and black on corsa
Blue/red (thick) - Fuel pump feed, Blue/red Slightly thicker on corsa
Blue - Coolant temp sensor feed for dash clocks, match to loom
Red/White - Autobox, unused in conversion
Red/Blue (thin) - electronic speedo feed, match to corsa plug
Red (large) - Battery +ve
Black (thin) Should be at the end of injector loom on xe, match to thin black we left in the bay earlier
Black/green - Aircon, unused in conversion
Now to get your fuel pump working you need to remove the glove box, and to the left there should be 3 relays like this.
One on the right has,
2 thick red/blue
1 thick red
1 thin red
1 black brown
And the one on the left,
2 red/blues, one slightly thicker than the other You need to remove the relay and bridge over these wires with a bit of wire and 2 spade connectors
1 red
1 brown red
This should have your c20xe running.
[Edited on 31-07-2011 by Linch]
[Edited on 01-08-2011 by Linch]
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.Matt
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Registered: 28th Jan 09
Location: Kent
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Linch maybe you should write that up into a proper tutorial?
Really good information there, Will help a lot more people now.
[Edited on 01-08-2011 by .Matt]
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reecegsi
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Registered: 16th Mar 11
Location: birmingham
User status: Offline
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Cheers mate great help !!
Few more questions thoe lol as for the 1.2 loom there is a couple more plugs next to the wires that you connected to the c20xe are these left blank???
My xe loom connector is different to urs mines just a black block with the wires you have mentioned coming off rail loom??
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Linch
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Registered: 4th May 06
Location: Whickham, Tyne and Wear
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Do you know what car the loom came off?
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reecegsi
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Registered: 16th Mar 11
Location: birmingham
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Yes it came out of a calibra the bloke said ??? All the wiring is in the bay thoe not like usual redtops when there in the footwell
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Linch
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Registered: 4th May 06
Location: Whickham, Tyne and Wear
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in that case leave the ecu wires in the bay and make your connections there.
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reecegsi
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Registered: 16th Mar 11
Location: birmingham
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Ok then i checked my wies out of that black block and there is these wires:
thick red
brown with blue stripe
black
blue
blue with red stripe
green
white
black with yellow stripe
some are different to ur ones do what would these ones be all on xe loom
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reecegsi
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Registered: 16th Mar 11
Location: birmingham
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Sorry the bottom of that last post is meant to say some are different colours to urs so what would i do with these ones ??? All wires on xe loom and the relays i have 4 in a row from left purple, black, purple and green???????
Thanks
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jay26
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Registered: 22nd Feb 08
Location: North Lincolnshire
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Quality write up that mate 
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monkeytwizzel
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Registered: 10th Aug 11
Location: Chard, Somerset
User status: Offline
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What have you done with the wires from the removed engine that are left over?i believe it will be the loom part that is pointing up next to the brown wire!
It might be handy for someone to do a complete how to guide for the type 2,radiator to use,eps fitment + wiring,loom wiring maybe even a home modified big bearing hub conversion how 2.
Will earn someone a few gold stars maybe even a pint
[Edited on 08-02-2013 by monkeytwizzel]
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beavisredtop
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Registered: 13th Dec 10
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What is meant by red large + ve ?
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