m50 swap wiring help needed

[whipsey]

i'm trying to work out if this is right so i can sort out my wiring loom for my m50 the old e30 320 loom i have worked out is this

pin colour use
1 blue alternator
2 green/yellow ?
3 unused
4 brown/violet coolant
5 brown/green oil pressure
6 green/white live in
7 green x 2 ignition
8 black/white fuel rate
9 black engine speed
10 blue alternator
11 green/white diagnostics
12 grey ignition coil
13 green/violet fuel pump relay
14 black/white road speed signal
15 black/green cranking signal
16 black/white ?
17 unused
18 black/yellow starter motor
19 unused
20 red/yellow battery


would this seem right?

[mike_sayer]

I've only got the colours/uses that I've taken from our '88 325i. Some of the colours are different, but the uses match up with yours. For my M50 conversion, I'm also not using pins 2, 3, 10, 16, 17 or 19. I had pin 20 as red/yellow and being the supply for the ABS (which we've removed from our track car). I'll be using pin 12 as my engine ECU check light connection, by connecting to Pin 8 of the engine harness and then connecting to pin 4 of connector A/C1 of the instrument cluster .

I have the pin-outs/colours for a '92 non-vanos E34 M50 if you need them, plus a full colour wiring diagram i've drawn up if you want it

[whipsey]

I've only got the colours/uses that I've taken from our '88 325i. Some of the colours are different, but the uses match up with yours. For my M50 conversion, I'm also not using pins 2, 3, 10, 16, 17 or 19. I had pin 20 as red/yellow and being the supply for the ABS (which we've removed from our track car). I'll be using pin 12 as my engine ECU check light connection, by connecting to Pin 8 of the engine harness and then connecting to pin 4 of connector A/C1 of the instrument cluster .

I have the pin-outs/colours for a '92 non-vanos E34 M50 if you need them, plus a full colour wiring diagram i've drawn up if you want it

if you can pm me them it would be appreciated mate i've just found brianmoores colour chart as well so hoping it should start up tomorrow

[mike_sayer]

Sent them to your hotmail account mate, from mine (mike_sayer@hotmail.com). Sent a spreadsheet with the pin changes, and the colour diagram of the M50 harness. Good luck!

Mike

[whipsey]

thanks for that mike mucho appreciated

[daimlerman]

I tracked most of my engine running issues to a poor engine/frame earth,be well worth spending £2 or £3 on a brand new lead....

[whipsey]

ive got a few earth leads here made sure i attached a good one lol

[SM AUTOS]

A tip that was given to me (by danthe) was to use 2 earth leads (one each side of the engine) as the heat from the exhaust manifold tends to fry the original on the o/s. Put another on the n/s of the engine as a belt and braces approach, won't cost much and may save you alot of greif..

[whipsey]

was thinkin the same too be honest