Motronic wiring help!
Posted: Sat May 29, 2010 1:31 am
Is anybody local to ealing and willing to come out and help me with my wiring? PM me please.
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Motronic wiring help!
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Posted: Sat May 29, 2010 9:03 am
What wiring is it?
Posted: Sat May 29, 2010 8:09 pm
mark i think its the bit where you plug the ecu in !! or may be the water temp sender on the thermostat housing!!
J
J
Posted: Sat May 29, 2010 9:09 pm
Is it starting from scratch? Tommi loves wiring!
Posted: Sun May 30, 2010 7:29 pm
LOOOOOOOOOOOOOOOOOOOOOOOLRetroBeemer wrote:Is it starting from scratch? Tommi loves wiring!
J
Posted: Mon May 31, 2010 5:06 pm
its all reasonably easy. what bits are you struggling with?
Posted: Thu Jul 01, 2010 3:56 pm
wiring up the motronic to the e21 fuse box its a bloody headache
Posted: Thu Jul 01, 2010 9:50 pm
notes from my build thread "murrans 325i" (might be different to yours, mine being a 320/6 originally).......
wiring is simple really.....
on mine....
from the e21 engine loom plug to the c101 round plug on the motronic loom.
- ing. feed to the coil - green/violet to solid green, pin 7
- starter solenoid - big black to black/yellow, pin 18
- rev counter - smaller black (different pin to starter wire) to solid black, pin 9
- alternator exc. - solid blue to solid blue, pin 1
- oil light switch - brown/green to black/brown, pin 5
- water temp. - brown/white to brown/pink, pin 4
- fuel pump is simply earthed and fed live via the violet/red, pin 13 (id suggest putting an in line fuse (relevent to the pump your using) in this just as it comes out of the c101 connector.
the rest of the wires separate from the c101 are black sheethed wires grouped together with ring terminals on. brown/violet and solid brown both need earthing.
and 4 reds same deal need battery live.
wiring is simple really.....
on mine....
from the e21 engine loom plug to the c101 round plug on the motronic loom.
- ing. feed to the coil - green/violet to solid green, pin 7
- starter solenoid - big black to black/yellow, pin 18
- rev counter - smaller black (different pin to starter wire) to solid black, pin 9
- alternator exc. - solid blue to solid blue, pin 1
- oil light switch - brown/green to black/brown, pin 5
- water temp. - brown/white to brown/pink, pin 4
- fuel pump is simply earthed and fed live via the violet/red, pin 13 (id suggest putting an in line fuse (relevent to the pump your using) in this just as it comes out of the c101 connector.
the rest of the wires separate from the c101 are black sheethed wires grouped together with ring terminals on. brown/violet and solid brown both need earthing.
and 4 reds same deal need battery live.
Posted: Fri Jul 02, 2010 9:29 am
wiring wiring wiring its fun fun fun. dont forget to power up your ECU
Re: Motronic wiring help!
Posted: Fri Jul 30, 2010 3:27 pm
I need help wiring up the fuel pump, iv done the 2.5 conversion the car fires up fine but obviously i done have fuel going in. I followed murrans thread to wiring the car up but when it come to wiring the pump im confused...."fuel pump is simply earthed and fed live via the violet/red, pin 13 (id suggest putting an in line fuse in this just as it comes out of the c101 connector". I cant seem to find any violet red wire and when i located the fuel pump i found that it had 3 brown wire connected to it. Urgent help needed please!
Re: Motronic wiring help!
Posted: Fri Jul 30, 2010 7:44 pm
Tommi, is the motronic master im sure he can do it for you, mind you may take a few months but will get there at the end. 
J
J
Re: Motronic wiring help!
Posted: Sat Jul 31, 2010 11:26 am
hey it ran in the end, just a matter of trial and error. more error and lots of trailing but in the end a good result.