BMW E36 11 button obc to 18 button OBC conversion - Brian David ...

QBuy Sell My eBay Community HelpHi, bdbernard! (Sign out)Site MapAll CategoriesSearchAdvanced SearchCategories Motors Stores Daily Deal .Home > Buy > Reviews & Guides > BMW E36 11 button obc to 18 button OBC conversionReviews & GuidesReviews & Guides Search Reviews & Guides Home pageBMW E36 11 button obc to 18 button OBCconversionby: strictly-german-ga ( 9425 )Write a guideMember Information14 out of 14 people found this guide helpful.Tags: BMW | OBC | Conversion | 11 | 18Guide viewed: 5869 timesFULL OBC Conversion (Directions: How to)Info provided by BiMmEr JoN (from BimmerForums)Alright. I've been getting alot of e-mails and post about how I did my OBC conversion so Iguess I'll finally spend the time to write about how it was done and how to do it.FIRST :Everyone who says it can't be done and those people who say it will cost a lot of money areabout to be proven wrong. The most expensive part for anybody doing the conversion will bethe actual computer and your time.strictly-german-ga ( 9425 )See all guides by this memberView items for sale by this memberStore view | List viewVisit this seller's eBay Store!Strictly-German incSee member's itemsWHAT YOU WILL NEED :1. The 18 button full OBC2. A crap load of wire, I suggest getting a spool, or several spools of different color wire so thatif you ever have to go back to look at the wires, it will be easier to look at.BMW E36 18 button OBC 325is325i 328i 328is M3 92-99Current Price: $75.003. Wire connectors - Female and Male or just the tube like connectors4. Wire stripper / Crimper5. Electrical connector - READ BELOW - VERY IMPORTANT------------------------------------------------------------------------------------Here is the directions Ioriginally recieved on how to do it. After these instructions, i will write how I actually tackled theproject.BMW E36 18 button OBC 325is325i 328i 328is M3 92-99Current Price: $80.00Q

Q------------------------------------------------------------------------------------Just work accurate and checkyou're wiring and connections before you start (do you have all the right connections yousupposed to have already, can you find the colours named in the instructions?? things likethat)Items from eBay sellersand check you're connections again before connecting the battery again! Good luck.So here it goes:You got to have at least the clock/date/temp-module and preferable the checkcontrol orcheckcontrol+temp.Start with disconnecting the battery!!BMW 18 BUTTON OBCCurrent Price: $35.00View similar items. ..The connectors:X1070 = black connector on the OBC = it's the same as the clock/date/temp-module and up.X1071 = white connector on the OBCX17 = blue connector on you're Instrument-panel.X16 = white connector on you're Instrument-panel.Power:BMW E36 OEM 18 Button OBCOnboard Computer M3 328isCurrent Price: $98.95View similar items. ..move X1070-pin18 (+30) to X1071-pin8.move X1070-pin17 (ground) to X1071-pin13.Check that X1070-pin14 (+15) has power +12V with the ign. key in position 1&2! (it should bethere already)X1070-pin9 needs power with ign. key in position 2 only. Get it from X16-pin13 on you'reInstrument-panel.X1070-pin16 is for the lighting and should be there already.BMW E36 18 button OBC ONBOARD TRIP COMPUTER 325328 M3Current Price: $70.00View similar items. ..The rest:X1070-pin12 is for the Temp. sensor and already there.X1070-pin10 & pin11 are for the gong (audible signal) and already connected.X1070-pin4 is for the 'menu-step switch' in the turn signal handle (this ofcourse needs ahandle with that option).X1070-pin14 is for the connection to X607-pin4 (preheater-relais) (this ofcourse only in caseyou have the preheater option)BMW OBC 18 Button On BoardComputer E36 323 323i 323isCurrent Price: $85.00View similar items. ..X1070-pin6 needs a wire to X17-pin26 in the Instrument-panel and it lights the 'check' lightwich has to be added if you did not have Check Control before. If you had Check Controlbefore, just check it.X1071-pin6 needs a wire to X16-pin21 on the Instrument panel.X1070-pin13 & pin15 are wired (keep them like that).X1071-pin9 needs a wire to X17-pin10 on the Instrument panel.X1070-pin8 needs a wire to the fusebox in the engine compartment where you connect it tothe black/green wire (Central Locking Module) and in case you have Central Body ElectronicsQBMW OBC 18 Button On BoardComputer E36 325 325i 325isCurrent Price: $85.00View similar items. ..

Qyou can connect the same wire to X10182-pin12 (black connector on the CBE-module).Connect X1071-pin7 to a white/yellow wire somewhere around the foot area on the driversside.View more items on eBay...Connect X1071-pin5 to a white/violette (kinda light purple) wire, also around that same driversside area. (there should be a free connection point for both).Connect X1071-pin1 to connector X1659-pin15 from the Electronic Car Alarm/Immobiliser(BMW name in German = EWS) (in case you don't have the ECA/I system connect X1071-pin1 to a black/violette wire on the passenger side.If you already have Check Control, check the next connections:X1070-pin3 (white/blue wire) to X1074-pin5 (Check Control Mod.)X1070-pin4 (white/green wire) to X1074-pin7 (CCM).X1070-pin5 (white/gray wire) to X1074-pin3 (CCM).Congratulations, you're On Board Computer should work now!! and you're grass will be a lotgreener too.(if the battery is connected of course)If however, everthings works except the Check Control, you're OBC needs to be re-configuredfor you're car. That can be done at you're local BMW dealer.------------------------------------------------------------------------------------WHAT I DID :*****Very Important*****You must go to a junkyard that has BMW’s. The most important part and I can’t stress thisenough is getting the other electrical connector that the 18 button OBC uses. If you do yourhomework, you will see that your existing TEMP/CHECK control computer only has 1 harnessgoing into it. The full 18 button OBC has 2 harnesses. That’s only part of the bad story. Thesecond part is that the you have to cut wires from your original harness and re-tap them to thenew harness and then run wires from different parts of the car to the new harness. (DON’TFLIP OUT YET, THAT’S NOT TO HARD). Making your own connector would be very hard andyou always run the risk or shorting out something so I strongly suggest getting the harness outof another junked BMW.------------------------------------------------------------------------------------Step 1 :Don’t start taking apart your car immediately. What I did was sit down with those instructions Iput up before and deciphered them. I drew an electrical diagram of of both connectors anddrew wires coming from each pin and labeled where each wire went I the car. THIS HELPEDA LOT. I lost a couple of the diagrams but I have no idea how I would post up these diagrams Idrew. But I suggest doing that. Here is a sample of what I did. Label what the function of thewire does to incase you ever need to refer back to it later on.QPIN 1 -------------------------------------- GOES TO PIN 23(DOES THIS)PIN 2 -------------------------------------- GOES TO PIN 39(DOES THIS)PIN 3 -------------------------------------- GOES TO WHEREVER (DOES THIS)PIN 4 -------------------------------------- GOES SOMEWHERE (DOES THIS)

QPIN 5 -------------------------------------- GOES HERE (DOES THIS)PIN 6 -------------------------------------- GOES THERE (DOES THIS)PIN 7 -------------------------------------- AND (DOES THIS)PIN 8 -------------------------------------- YOU (DOES THIS)PIN 9 -------------------------------------- GET THE POINT (DOES THIS)Understand the directions :X1070 – When you see this, it is referring to the Black connector that your car should alreadyhave. This connector should have 18 pins on it.X1071 – When you see this, it is referring to the WHITE connector that you will need to getfrom a junkyard. It should also have 18 pins.X17 – when you see this, it is referring to the BLUE connector that is attached to theinstrument clusterX16 – When you see this it is referring to the WHITE connector on the back of the instrumentcluster.Step 2 :Print the original directions on top and then read the rest. I am going to explain how to readthis guys directions .Step 3 :Remove your instrument cluster. This is done by removing the 2 screw at the top of the clusterand wedging it out between the steering wheel and the dash. Once this is done, disconnect allthe connectors from the back of the cluster. This will make it a lot easier.Step 4 :Ok, I’m looking at the section that says POWER.Its really self explanatory from here. If you followed my directions and drew a wire diagram therest of these directions will be super easy. Just move the wires it says and attach the wires itsays to wherever it says.You have to fish wires from the instrument cluster down to the computer. They went downfairly easy for me hopefully it will for you.GOOD LUCK.HOPE IT WORKS. I’M NOT TAKING ANY RESPONSIBILITY FOR YOU MESSIN UPMASSIVE AMOUNTS OF STUFF ON YOUR CAR. I’D ONLY TRY IT IF YOU HAVE SOMEKNOWLEDGY IN ELECTRICAL STUFF. DON’T DO IT UNLESS YOUR CONFIDENT YOUCAN. IF YOU HAVE ANY DOUBTS, DON’T EVEN TRY.Guide created: 10/12/07 (updated 05/12/09)Guide ID: 10000000004562977Was this guide helpful?Yes NoReport this guideQ

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