L-jet fuel pump relay help

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brennon
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Post Fri Mar 21, 2014 12:31 pm

Having issues with my fuel pump relay, it looks like this -

Image


i have bridged it out as you can see here -

Image

Image


i have tried 3 different relays, one being a brand new genuine bmw one so i know the relay is not at fault.

i understand that one of the wires should be an ignition live to open the relay but which one is it and what are the other wires?

thank you in advance!
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Brianmoooore
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Post Fri Mar 21, 2014 1:58 pm

http://www.e30zone.net/e30zonewiki/imag ... e30_84.pdf
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brennon
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Post Fri Mar 21, 2014 3:40 pm

Thank you but that's made it worse for me!

The relay is switched on a ground that should be a brown wire?!

I don't have a brown wire!

Where am I going wrong?
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brennon
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Post Fri Mar 21, 2014 3:42 pm

Is it a simple case that I'm missing the brown wire and I just need to earth one of the pins?
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Brianmoooore
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Post Fri Mar 21, 2014 8:45 pm

What colours do you have, going to what pin numbers, and what is the age and model of the car?
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brennon
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Post Fri Mar 21, 2014 9:47 pm

It's an e21 that has been converted many moons ago.

From what I can see it's just the injection system that has been added rather than the whole engine swapped

It's an m20b20 and was an auto before I got my hands on it.

I'll have to check the pins tomorrow when I'm with the car
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