M20 B20 electrical sheme...

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Eddy
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Joined: Sun Oct 23, 2005 11:00 pm

Post Sun Dec 04, 2005 12:15 am

Hi guys...

Today I started with my swap,out with the lazy four pot 1,6 engine,in goes M20 B20...

Production year of the engine is 1987,my car is 1988,and I have seen the beginig of my trouble already...the pin conector located by the fuse box under the hood is round,while the cable that goes from the engine is not round,but rectangle shaped...(sorry for the poor english,haven`t wrote in english for some wild... :oops: )
how to conect the two togeder,I have to have the car done by the end of the sunday,since it`s my daily driver....

Some wiring sheme whould help alot 8)

please help,I know a lot of mechanical thing on E30,but wires are not my friends :oops:
Building my ultimate drift E30....
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Eddy
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Post Sun Dec 04, 2005 7:36 am

Nobody? :(

realy need it badly...will be realy greatful for any kind of advice... 8)
Building my ultimate drift E30....
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Brianmoooore
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Joined: Mon Jan 10, 2005 11:00 pm

Post Sun Dec 04, 2005 10:01 am

Hang on mate! Don't know where you are, but your first post was at 12.15am UK time, and your second at 7.36am UK time. Most of us sleep between these times!
I have the pin connections for the round connector in the car, but I'm afraid I don't have the connections for the older rectangular connector on your engine loom.
If you match up same coloured wires you won't be far wrong though.
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Eddy
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Post Sun Dec 04, 2005 11:36 am

I conected the wires by numbers that are writen in both conectors...hope it works :D

hehe I forgot that U guys are in a diferent time zone :cool:
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Brianmoooore
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Post Sun Dec 04, 2005 3:09 pm

Eddy wrote:I conected the wires by numbers that are writen in both conectors...hope it works :D

hehe I forgot that U guys are in a diferent time zone :cool:
Right, found an old Haynes manual I'd forgotten I had, and that gives a wiring diagram for some 3 series with the old connector.
Treat these as suggestions, no gosple truth:
Old pin 1/ brown/green = oil pressure = new brown/green, pin 5
Old pin 13/ brown/white = water temp = new brown/purple, pin 4
Old pin 3/ green/black = fuel pump - new green/purple, pin 13
Old pin 6/ green/purple = fused ignition? = new green/white, pin 6?
Old pin 8/ green = ignition = new green, pin 7
Old pin 3/ blue = ignition warning = new blue, pin 1
Old pin 10/ black = starter signal = new black/yellow, pin 18
Old pin 15/ black = tacho signal = new black, pin 9, but this might not be a suitable signal for the later tacho.
Hope all this makes some kind of sense, and helps.
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