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Looking for a good electrical diagram for M73
Posted: Sun Mar 14, 2021 5:53 pm
by JRockland
As the title say..
I tried emanualonline.com and there manual is total junk, I think the guy who scanned it was drunk.
Sadly the worst pages are the one im looking for..
Re: Looking for a good electrical diagram for M73
Posted: Sun Mar 14, 2021 10:02 pm
by AndreyB
Re: Looking for a good electrical diagram for M73
Posted: Mon Mar 15, 2021 4:56 pm
by JRockland
Thank !!
Start working on the harness, it look like a massive mess until you realise bmw engineers made it look bad but in reality it is really straight forward.
Re: Looking for a good electrical diagram for M73
Posted: Tue Mar 16, 2021 7:02 pm
by Simon@FutureProof
That is something a lot of people find.
They are intimidated but the apparent complexity of the BMW stuff, once you get into it you realise it's actually pretty simple and standardised across a lot of their cars.
They like to evolve things so each generation is not too drastically different to the last under the skin.
Re: Looking for a good electrical diagram for M73
Posted: Tue Mar 23, 2021 12:28 pm
by bill
how about some photos!!!????
Re: Looking for a good electrical diagram for M73
Posted: Tue Mar 23, 2021 3:13 pm
by JRockland
If you really want a picture
Still waiting for the welder to come assemble the engine frame so I can start working on it
And also my shop is getting painted, might delay everything by a week or two. Anyway I'm in no hurry.
Re: Looking for a good electrical diagram for M73
Posted: Sun Apr 04, 2021 9:45 pm
by JRD McLAREN
Nice ...
You need engine wiring .. ??
it is the same as M20B25 .. but double ...
Re: Looking for a good electrical diagram for M73
Posted: Tue Apr 06, 2021 5:07 pm
by Simon@FutureProof
That's true for the M70 but not the M73.
M70 uses a pair of modified M1.3 motronic units but the M73 uses the much later more complex M5.2 ECU.