bigcoupe.com

Referring to the above diagram, look for the box with a C1 plug (there should also be a C2 plug) and a brown/yellow wire going to pin 17, that be your culprit. Indeed, this box http://www.ebay.com/itm/NEW-OEM-BMW-658 ... 1554229734 has two plugs

OK I've had a bit more time to look into this. The circuitry is different between say my '86 635 and your '84 633. In the '84 633 ETM below. you will note that there is an "On Board Computer" and an "On Board Computer Control Panel". We need to find out what is actually what. My ...

Song, the link I posted before was a search 633>1984>USA>Instruments, measuring systems>On Board Computer reveals part number 65811372823 that is pn 2 here; http://www.realoem.com/bmw/enUS/showpar ... Id=62_0065

Thanks Brucey. It will be a close run thing for sure. Then again, my nibbler tool may have to come out

I'll let you know when I find some here Paul. Should be cheap to mail USPS First Class. PBeige color correct? Ralph Hey thanks for that Ralph ! Don't go out of your way too much though as I will attempt to manufacture the spacers first. I just picked up some 9mm MDF and pearl beige touch up paint f...

Mmmmmkay. BMW South Atlanta want what equates to $70.00AUD for 2 spacers. I think I'll make my own

Picture this scenario. For whatever reason, at some stage the OBC horn operated. The relay coil energised and the contacts close. For whatever reason (worn contacts, shorts, over-current), the contacts at that stage carried excess current and welded shut. The OBC horn relay coil would have de-energi...

Following on from the thread in Saloon, I'm looking into upgrading my front speakers. The existing 50w max Coustic fronts are easily being over-driven by my new Pioneer head unit. I am checking out the Infinity Kappa 462.11 plate speakers which will be a vast improvement at 60w RMS. I just have to m...

OK thanks. Back home now, pulled out the old fronts and will continue this discussion in Interior forum.

Not necessarily Ken. The contacts on the relay may simply be welded closed. This is a fairly common occurrence.

Song, I imagine the relay is on board the OBC control box, not separate. If you pull it apart, make sure you take lots of photos to add to our fantastic BC knowledge base !

This is good news for owners in Oz. I reckon Baders will be pretty happy with the value for money Locutus plus the S38 is giving him. There are the two schools of thought here of course. The "exclusivity" of the factory built M635 chassis. Any purchase in this area considers the hopeful f...

The on-board computer control box is separate to the OBC display itself, and can be replaced. The relay in the control box itself I don't know. If you are brave it looks as though you can pull that control box apart. By doing this you may be able to replace or repair the actual faulty relay. If, as ...

RealOEM here, part 2; http://www.realoem.com/bmw/enUS/showparts?id=5284-USA-03-1984-E24-BMW-633CSi&diagId=62_0065 Ebay; http://www.ebay.com/itm/NEW-OEM-BMW-65811372823-On-board-computer-Control-unit-/151554229734 http://www.ebay.com.au/itm/On-board-computer-control-unit-BMW-E28-E24-E23-5-6-7-ser...

Song do you have the Electrical Troubleshooting manual ? If not, you really should download it :) It is available through links here on BC somewhere. The Onboard computer relay is under the left hand side dash. There may well be a problem with your on board computer relay, but the relay in turn is d...

OK thanks. I'm trying to find out if it is compatible with my Aussie (Euro) 1986 car. It's a bit confusing.

Bert. Is the pod the type with 0-70L fuel gauge ? Photo perhaps ?

As above, you should find the Bosch units pretty close.

Beautiful car. A real credit to you dedication ! Thanks for taking the time to post up all the photos.

Lovely work as usual Don. My 4x6" fronts are fairly craptastic what with the new amplifiers, so am looking to upgrade. What model Pioneer did you install ? 2 way or 3 way 4x6" ? I'm really looking hard at the Infinity Kappa plate 4x6" plate speakers (60w RMS), but do not know if they ...

I'm not married. That is all.

Eric, You're a lucky man being able to fit the bunch of snakes manifold: with the rhd steering box I spent a lot of time and effort trying to get an E34 S38 manifold to fit, then had to give up. £900 later, I had a Fritz manifold which is nothing like as good as your set up! Cheers, Rob Rob. I am ...

Can anybody tell me what this transistor does? I put a voltage tester on it, and it seems to be working. I just don't know what its role is. Opening the heater flaps, possibly? In basic terms, the transistor acts as an amplifier. Looking at the picture below, current to the blower motor (green arro...

Or.................you could catch up with a good looking West Aussie fella with a mildly worked high compression absolutely solid B34 to purchase complete !

viewtopic.php?p=177742#177742

Save yourself all the trouble, buy this and add the fluid temp and pressure modules. I have it fitted and it is great, the gauge is small enough to mount in the grille above the ashtray and still clear the A/C fan. http://www.plxdevices.com/Wideband-O2-Touch-Screen-Multi-Guage-p/897346002719.htm Mm...

I would take the view that, even though Rons car is 10K above your limit, you ARE going to spend that with just about ANY other example just to get it up to scratch. With Rons car, you have the added bonus of being able to eat your dinner off the engine !