A NEW headlight washer problem

rally-chris · Post by **rally-chris** » Tue May 08, 2018 8:51 pm

Not the answer you are looking for but might be helpful background reading:

http://www.bmwenthusiasts.co.uk/forum/v ... php?t=9036

Also online Z4 wiring diagrams can be found at the following link, but not the easiest to navigate around and find a specific component!

https://www.newtis.info/tisv2/a/en/

Scooba_Steve · Post by **Scooba_Steve** » Tue May 08, 2018 8:57 pm

From the look of the wiring diags (for N52 3.0si) it's just two wires to the pump from the relay. I'm going to assume the SRA feed is already there and the loom to the pump isn't.
1 relay and a feed to the pump, connector and coding should be all it needs.

https://www.newtis.info/tisv2/a/en/e85- ... em/mNk220N

Darkangelv2 · Post by **Darkangelv2** » Wed May 09, 2018 8:57 am

Thanks both - i'm going to do a temporary job for MOT running an inline fuse. Then probably go down the route Scooba_Steve has suggested.

The relay is still available easily and cheaply and i will have to spend some time working out the wiring harness. I have the guide here for installation https://bmweba.com/eba-01-31-0-301-545/

I might be back here asking for help on interpreting wiring diagrams!

Darkangelv2 · Post by **Darkangelv2** » Wed May 09, 2018 9:22 am

I can find the wire thicknesses and colours but don't know how to interpret what type of connector/crimp is required at the ends of it (or the lengths but that's easily rectified).

Any ideas?

https://www.newtis.info/tisv2/a/en/e85- ... em/mNk220N

Scooba_Steve · Post by **Scooba_Steve** » Wed May 09, 2018 7:16 pm

So you just need to check the wiring connectors at X11002 and X11003 and confirm the pins are present. I assume X11003 will be but X11002 probably won't.

The connectors/spades should be available individually from BMW - RS components also stock Tyco stuff but are a lot harder to match up part numbers, though are cheaper.

Darkangelv2 · Post by **Darkangelv2** » Fri May 11, 2018 10:07 am

I'm hoping to confirm the temporary fix tonight.

There's a 5 AMP fuse sat in the terminal box in the top right of the engine bay. I've bought an Autoleads Add-a-fuse to piggy back onto it which should provide my live feed to the relay. Then that'll be it!

Will proudly video my results

(or video my face of abject failure).

: Engine Bay.jpg (98.23 KiB) Viewed 768 times

: Autolead.jpg (27.42 KiB) Viewed 768 times

Darkangelv2 · Post by **Darkangelv2** » Fri May 11, 2018 10:08 am

FYI - the wiring harness to do this job properly is still available from Germany. Your dealer can order it on 61120300700. It's currently £43 ex VAT.

Darkangelv2 · Post by **Darkangelv2** » Fri May 11, 2018 12:11 pm

Scooba_Steve wrote: ↑Wed May 09, 2018 7:16 pm So you just need to check the wiring connectors at X11002 and X11003 and confirm the pins are present. I assume X11003 will be but X11002 probably won't.

The connectors/spades should be available individually from BMW - RS components also stock Tyco stuff but are a lot harder to match up part numbers, though are cheaper.

Hi Steve & rally-chris

Just thought, any idea how i would obtain the power draw the pump requires on its own in order to select a relevant fuse? The OEM harness would power it via power distributor A41 which has a 30A fuse but is powering multiple items.

ph001 · Post by **ph001** » Fri May 11, 2018 2:52 pm

Ultimately the only thing the fuse is there to protect is the wiring so you can pretty much base it on that alone. All but the crappiest of thin bell wire will not set on fire at 10A so I would say you would be safe with a 10A fuse. I think the pump itself will be under 5A running current though so you could probably run a 5A fuse..

Darkangelv2 · Post by **Darkangelv2** » Fri May 11, 2018 3:50 pm

Thanks ph001 - i'll start with a 5 and work my way up. I have several spare fuses.

Scooba_Steve · Post by **Scooba_Steve** » Fri May 11, 2018 5:05 pm

I'd run the feed from the fuse box, there should be ample spare live/acc/ign you can pop a spade in and then an inline fuse.

Darkangelv2 · Post by **Darkangelv2** » Fri May 11, 2018 7:46 pm

Scooba_Steve wrote: ↑Fri May 11, 2018 5:05 pm I'd run the feed from the fuse box, there should be ample spare live/acc/ign you can pop a spade in and then an inline fuse.

What I’ve done is perfectly reversible so will be going down that route after the MOT in the morning.

In the meantime....

[youtube]https://youtu.be/9ZIEGnOFYpQ[/youtube]

It won’t embed.....

Ps. Yes, it’ll drain the tank in about 15 seconds! But perfect for an MOT once a year

rally-chris · Post by **rally-chris** » Fri May 11, 2018 8:28 pm

Nice work!

Scooba_Steve · Post by **Scooba_Steve** » Sun May 13, 2018 12:31 pm

I've just noticed that Sep 06+ cars have a washer fluid level sensor... for some reason I want to retrofit it

Darkangelv2 · Post by **Darkangelv2** » Sun May 13, 2018 1:27 pm

Scooba_Steve wrote: ↑Sun May 13, 2018 12:31 pm I've just noticed that Sep 06+ cars have a washer fluid level sensor... for some reason I want to retrofit it

Never knew that! I’ll look it up as that does sound handy.

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