Installing an Acewell speedo/computer on an airhead --

Discussion in 'Airheads' started by bpeckm, Nov 23, 2009.

  1. Prutser

    Prutser Long timer

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    Those things are SUPER. But the prices are crazy... They are really high class instruments.
    I'm using the "mini" on my 80st. It saves a lot of space on my dash and works exelent.
    But if I would have seen the rally type, I would have bought that one for that bike.

    On a R69 i'm using the motoscope classic. And the tiny on a R65 trail bike ( project)

    The only thing is that the wires are really thin.
  2. Airhead Wrangler

    Airhead Wrangler Long timer

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    I remember seeing that a while back, but I just went to their site and couldn't find it. It looks like they don't carry it anymore.
  3. Prutser

    Prutser Long timer

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    I tried the search option on their site.
    http://motogadget.com/en/motoscope-rally-komplett.html
    Otherwise I could not find it eather.
  4. Super rider

    Super rider Adventurer

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    Ever since I installed the acewell I keep blowing the top fuse on my bike. I have a 1975 75/6. Some of the wires from the diagram were different colors but with the wire tester we figured out the differences. However like I said for some reason ever since whenever I go on a ride the top fuse blows. It takes about 20 minutes for the first time to blow. Replace fuse, 10 minutes blows, replace fuse blows immediately thereafter. So basically when the bike is cold it's fine but when it gets hot it blows, and keeps blowing until it completely cools down again. This never happened until the install so it has to be connected. I have looked up and down the wiring for frayed or pinched wire and found nothing. 2 thoughts from those of you who have done this install; 1. I did not connect every wire to the acewell. Only the neutral light and the brights light work, the blinkers, oil, and overheat light are not connected. I simply cut them and electrical taped them off. Could this be causing the issue? Does every wire need to be connected? 2. When ever I turn the brights on and off from the white switch on the handlebar the speedo seems to short out. If I wiggle the switch the speedo turns on and off. If I turn the switch all the up the speedo turns off completely. Stupid question but Is this supposed to happen? Is the speedo supposed to be controlled but the lights switch? Somehow I don't think so. If I did wire that switch wrong is that enough to cause the blown fuse? Anybody else have a blown fuse as a result of their install? Anybody live near bradenton,fl who wants to drive over for a 6 pack and some help? Any help would be appreciated as its quite frustrating to not be able to go for more than a 10 minute ride. I know if I take it to the dealer they're going to chide me about putting on the speedo and then charge me for hours of labor to probably fix one mis connected wire. ;(
  5. craydds

    craydds Long timer

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    Reading your post without my bike or my wiring diagrams in front of me. My bike is a '75 R90S so we might be able to figure this out. The "top fuse" supplies power (positive voltage when the key is ON) to the Acewell, yes? There is another wire (red?) on the Acewell that needs positive connected - stays ON even when the key is off. You have to run an extra wire from your circuit board to this. Do you have bpeckm's wiring instructions? Do you have the Acewell schematics? What is the "overheat light"? I would connect ALL the lights - all the wires from the stock instrument cluster - to the Acewell. Double check your GROUND. You describe some curious issues with the speedo/bright light switch. I am in Nuevo Mexico but I would like to come over for a thirty pack.
  6. Super rider

    Super rider Adventurer

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    Yes I have Beckmans diagram and the schematics. Like I said Beckmans wires were a little different for colors than mine. I thought there was a temperature light (over heat) but I think I'm mistaken. The only lights that work on the speedo are brights and neutral. I'm not familiar with this extra wire you speak of. When I turn off the bike the speedo clock stays on for a few minutes then goes off. Otherwise it turns off and on with the key. I did separately wire the gen light to a light by itself as instructed, but don't know of this extra wire to the circuit board issue. Please elaborate? And yes it is a quandary. :cry
  7. craydds

    craydds Long timer

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    What model number is your Acewell? There is a wire on the Acewell (red?) that needs power to run the clock. This is not switched, but stays positive. You would run a positive wire from your circuit board and connect it to the Acewell's "red" wire. (again, just off the top off my head. scary.) Look at you owner's manual wiring schematic, too; better than some of the Clymer/Haynes diagrams. I think you may have an issue with your switched wire (BMW green/black?). I will be back at my house tomorrow night and may be of more help.
  8. craydds

    craydds Long timer

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    If you disassemble your stock instrument housing and decipher the circuits, this will help you understand the function of each stock wire to the the instrument cluster, and how they will correspond to the Acewell.
  9. Super rider

    Super rider Adventurer

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    Thanks for your help. It's model 2853. I'll check the wiring again for the red wire. Those wiring schematics are like reading alien diagrams to me. :)
  10. Airhead Wrangler

    Airhead Wrangler Long timer

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    I went back and looked at the feature sets between the normal motoscope and the rally version. Although I like the the waterproof connections and heavier wiring on the rally model, it looks like the data isn't quite as useful for travelling purposes:

    Rally:
    Fuel gauge in % (LED bargraph)
    Speed in km/h or mi/h
    Adjustable trip meter A
    Adjustable trip meter B
    Adjustable total distance meter
    Travel time
    Max. speed
    Operating hours meter

    Regular:
    Rev counter (LED bargraph)
    Rev counter (numeric)
    Threshold adjustment/gear shift flash
    Speedometer
    Trip meter
    Total distance (adjustable)
    Travel time display
  11. Prutser

    Prutser Long timer

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    You are right. But my bike is more used for rally and off road things. When I'm doing a roadbook trip it would be nice to re-set the trip meters easier. At the moment I use a KTM switch and connected it to the kill switch.It works...
    For travelling I count on the gps.
  12. Super rider

    Super rider Adventurer

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    I recently installed an acewell on my bike. I used beckman's diagram but some of the wire colors didnt match. I have a 1975 75/6. Not sure what year or make his was. His diagram has green/black and blue going to the light. My bike has no green/black wire from the instrument cluster. I have a green/blue which I did hook up to the plain blue and run it to a seperate light. After using the bike for a couple of weeks I discovered I have a dead battery. I'm now wondering If I don't have that light hooked up with the proper wires, since that light is part of the charging system. I used a tester and figured out what all the other wires did so through process of elimination thats how I came up with the blue/green wire being the only possible wire. When riding it the last few weeks the light does come on for a few seconds after starting the bike, and then after revving the bike or riding it it goes of after a few seconds. Which I beleive is how its supposed to work. My question is simple, if anyone has done this on the same year and make model do I have the wires right? Is the blue/green wire the correct substitute for the green black wire in beckmans original diagram? Is the way the light is working the correct way? FYI i did use a real bulb and not an LED as bekman suggested so unless that's the wrong wire I dont know what else it would be. Ofcourse it could just be a coincidence and my battery died for an unrelated issue but it seems an awful big coincidence.
  13. bill42

    bill42 Old-School BMWs

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    I don't have the answer you are looking for so I hope someone posts about the colored wires you are concerned with, but I want to ask, did you check your charging system? Doesn't the acewell have a setting to switch to voltage? (if not use a volt meter) Your battery should read something over 13 volts- say 13.5 or 13.8 (guessing here) when your bike is revving over 1000 RPM. Another thing to check would be for a voltage leak when the bike is off. This would require one of those inductive amp meters though. There could be a small short or something left on that draws some current when you turn off the key.
  14. Super rider

    Super rider Adventurer

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    yeah i'll have to check everything i'm sure. can't check the volts now ofcourse cause its completely dead but i'll charge it up and hook everything to it and see what i get. didn't know the acewell had a voltage check on it though. that would be convenient if it does. thanks.
  15. bill42

    bill42 Old-School BMWs

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    Well don't quote me on that as I haven't installed my acewell yet. I thought I read it on the box though, and it would be damn easy to throw in as a feature so it better be there!
  16. Super rider

    Super rider Adventurer

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    Well the bike completely died on me on the side of the road. After sitting there for an hour the local BMW shop came and got me. As suspected the battery is dead and the bike isn't charging at all. The BMW mechanic left for the day so I need to leave it. Therefore hopefully someone can answer my question before Monday so I can call the guy and tell him what to do before they charge me a fortune trying to figure it out.
  17. Jeremiah

    Jeremiah Been here awhile

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    I have not installed the Acewell yet but plan on it soon. I do have a problem very similar and this weekend going to try to sort it out.
    First thing to do is check the battery - they can charge up and show 12+ volts particularly the AGM batteries - but check it under load - after you charge it try to start the bike and watch the voltage - if it drops too low you may have a compromised cell. Once started check the voltage to make sure you are getting enough out of the alternater / Regulator to charge the battery. If not Snowbum's site has a very good method of determining what in the charging system has decided to become flakey. I checked the batt charged it and saw good voltage and good charging and it failed while driving down the road - all of a sudden. Have one arriving today - then plan to go through everything to make sure the battery failure was not caused by something else. I doubt the Acewell/generator light caused the problem.


    Check out Snowbum's site - http://bmwmotorcycletech.info/technical-articles-list.htm

    Good luck!
  18. tete

    tete clown shoes

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    I've tried reading through this thread and its getting abit confusing as with cross over harness's etc.

    Here is what I have R90/6 1975

    I am looking to get the Acewell and if I read this correctly I can get a sensor for the tranny to read RPM and speed?

    I have seen the one I like, it runs about $200, the one that was lesser I don't believe they make anymore?

    please advise

    Thanks
  19. craydds

    craydds Long timer

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    When you order your Acewell, you may choose to order the transmission speedometer sensor: http://www.acewell.co.uk/Acewell Ac...s - Cable Drive/ACE-S11.htm?action=full&id=61 . The RPM (tachometer) "sensor" is from your coil or spark-plug wire. I am in the process (very slow progress) of installing my Acewell. I will make some pictures and post some notes on my progress (check back in three months).
  20. tete

    tete clown shoes

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    What did you end up paying shipped I the us? Assuming you got the $200 one.