BMW E30 series 1 - SI board bypass/delete

[@lucascochrane3619]

You sir, are a goddamned legend for this. Yes I did spend what felt like an eternity hunting down and finding a series one SI board (my car came without one entirely) but this saved me from doing my own resto work on it and fixed my temp gauge. Truly, thank you and thank god I found your video while looking for reference images to restore from.

[@e30repairs9]

Glad it helped :)

[@ryss15]

Thank you very much. 🎉

[@e30repairs9]

You're welcome 😊

[@thejackstandmechanic7633]

Great video. You can also cut and bend a paper clip and use it to jumper between those two slots. A paper clip seemed to be the perfect size and the slot grabbed it tightly as if it were a pin. Worked perfectly.

[@e30repairs9]

Thanks man! Yeah good idea as long as it stays put.

[@madmike5144]

Thanks for this video, when i have also some issues in my instruments cluster, need test this some day

[@archonblaze]

It works, just did it now. And now the rev tacho does not wander up and down slightly like it always did previously. So on the Series 1 E30, the only thing the SI board does is control the service lights? Jeez I wish I knew that a few years back, when I spent a lot of time having my SI board re-soldered and repaired, got new batteries e.t.c - and the service light globes had already been removed on my car anyway! So I could have just bypassed it. Last week the rev and temp gauges both started jumping around then going dead, then alive again. Using this trick to bypass the SI board fixed it. Edit : I did lose my park brake light. It does not even come on when turning the ignition on, like the one in this video does at 3:40. I must have knocked something...

[@e30repairs9]

Really good to hear Yohan! Possibly bumped something, but also the handbrake switch at the handbrake lever which activates the light can be a little dodgy I've found.

[@emilioguitart3754]

Wow.....I’m really gratefull for this

[@e30repairs9]

Pretty neat huh :)

[@costahams3964]

Great video. Many thanks for the help.

[@amivanpoederooijeniglesias8720]

Thank you brother for this information! you are the good type KZbinr purely to help 🙏 my Si board was toast.. maybe you can help brother.. I have a bmw E30 with the same board but I have swapped the engine to a Nissan SR20 DET and I need to feed a signal to my tachometer do you know from where I can get my signal connection? Is it from the coil signal or the injector? I have no idea how to get a signal 😅

[@e30repairs9]

Thanks for the comment mate. Unfortunately i'm not sure how to assist with your SR20DET swap/rpm signal issue :( not that tech savvy. Maybe just check some forums or fb groups, i know it's not an uncommon swap so i'm sure someones sorted it.

[@amivanpoederooijeniglesias8720]

Thanks for your reply brother!!! I got it sorted, signal from the Ecu of the sr20 to a square wave converter and back into the bmw e30 cluster. Thanks again for keeping me in mind and hope to see more videos of your to come 🙏✌️

[@gangstae30fixes7]

Cool think ill do this. What motor do u have in there? Could u show me what coding plug (black T stick) do u have in there? Ur car is idling a bit high

[@e30repairs9]

Its a 1985 m20b23. Not sure what you mean by coding plug? I've actually got some more idle issues these days (vacuum leaks).

[@77mRacing]

What does bridging the two contacts do?

[@e30repairs9]

The contacts are usually connected through the SI board via pins. As far as im aware they just go through the SI board without actually doing anything. By bridging the contacts, you remove the need for the SI board whilst retaining the functions of the Tacho and temperature gauge.

[@erdemyigit7085]

Sol taraftakı gösterge için ıs kart iptalı nasıl olur

[@omaraltaani9510]

Welcome . I have a problem with the rpm gauge and throttle gauge. Sometimes only the rpm counter works. The battery has been changed. And the problem still remains

[@e30repairs9]

Change your fuses as per the end of the video. I can't remember which ones exactly but there's 3 that should be changed.

[@omaraltaani9510]

@@e30repairs9 ok.thank you

[@timisoutdoors]

@@omaraltaani9510 Did the fuses work?

[@2Tacticool]

Going to try this. My board did the same thing as yours. Acid got on the board and messed it up.

[@e30repairs9]

Hope it goes well for you. The hardest part for me was soldering the wire on, it can get messy quickly if you arnt careful and jump the next pins over.

[@shzamu]

does this series 1/2 have any thing to do with the year of manufacture ?

[@e30repairs9]

I think it's pre 1986 cars but I don't know for sure. Maybe some pre 1986 cars did come with the blue cluster?

[@madmike5144]

Here you can see differents series 1, series 2 SI board differents, there was 2 different series SI boards in series 1 e30 www.bavrest.com/technical-articles.html?fbclid=IwAR186PBZCAteTfwkiriLH9yOWEvQj4BCUbF07bjGj1goIydD5Zt_j9OHpxw

[@e30repairs9]

@@madmike5144 thanks for the link man that's awesome!

[@leog8428]

Thanks for the video it helped me a lot, maybe you can tell me the color code of the Fuse Resistor next to the batteries, mine its blown and I can't see the color no more. I will really appreciate the help

[@e30repairs9]

Sorry you might have to look that up, I threw my SI board away a while ago.

[@eddieellison7679]

What does bypassing it do?

[@e30repairs9]

Just means the gauges work independently of the board.

[@ibrahimelmasry6823]

which cars were fitted with the series 1?

[@e30repairs9]

Don't quote me on this but I believe it's pre 1986 cars.

[@DANEX7799]

@@e30repairs9 that's correct. You can quote me on that.

[@revenblood]

Hi, do u put de si board back in or not ?

[@e30repairs9]

No, don't put the SI board back in.

[@revenblood]

@@e30repairs9 cool, it works. Just the temp gauge is marking a bit above. I will try to apply a resistor but I still have to figure it out how many omhs. Since my si board is completely trashed I can't get a reading. I have a fase 2 si board but I think the resistance is different.

[@revenblood]

I just measure, I think the series 2 board i found 2 main resistors on the temp gauge circuit, a big one measuring 70 omhs and a small one with 1496 ohms. On the series one si board, it's so badly damage that I can't follow the tracks.

[@e30repairs9]

@@revenblood hey Claudio. Sorry im a bit confused. Is the soldered connection with the jumper wire good? And you're issue is the temperature gauge is reading slightly high?

[@revenblood]

@@e30repairs9 yes its all good. Just the temp shows a bit high. I'm trying to find using the si board, how many ohms I need to make it right.

[@Vladimir-rt3oc]

I have serias 1, what can i do?

[@e30repairs9]

Do you mean series 2 (later model)?

[@mosablawna5215]

Hey I have serias 2 What i can do?