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Old 10-12-2012, 10:01 AM   #331
craydds
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Looking through ignatz72's thread, it seems that one should use an incandescent bulb for the generator warning lamp. Has anyone tried an LED?
Read post #119 by Bill Harris here http://www.advrider.com/forums/showt...r#post18097765
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craydds screwed with this post 10-12-2012 at 10:12 AM
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Old 10-12-2012, 10:27 AM   #332
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Quote:
Originally Posted by bmweuro View Post
Thanks for the drawing. What size resistor did you use?
Snowbum says :Resistor discussion: Nearly any type of resistor may be used. It can be the old-fashioned type called 'carbon composition', or any modern type of 'film' or 'deposited carbon' type....or even a 'wire wound' type. The resistor value CAN be 470 ohms, but my tests indicate that 330 ohms is better.


Quote:
Originally Posted by craydds View Post
Looking through ignatz72's thread, it seems that one should use an incandescent bulb for the generator warning lamp. Has anyone tried an LED?
Read post #119 by Bill Harris here http://www.advrider.com/forums/showt...r#post18097765
from the same Snowbum article: The GEN lamp is rated at 12 volts and 3 watts. Ohms law says that the lamp resistance is 48 ohms when energized by 12 volts. I guess I'll poke around an autoparts store or radioshack...

EDIT: found this from Snowbum too about the Gen lamp:recommended 168 lamp = 4.90 watts, .35 ampere, rated 1500 hours, a.c.

Thanks!
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benthic screwed with this post 10-12-2012 at 10:40 AM
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Old 10-12-2012, 11:07 AM   #333
craydds
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Good info, thanks. I'll check the spec's on my little red lamp.
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Old 10-14-2012, 03:21 PM   #334
craydds
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tach cable?

Tach cable has to go:


Gone:


Now, what do I do with the "hole" ? And the rubber grommet? Is there a solid rubber grommet - no hole for the cable?


Any ideas? What have my fellow inmates done?
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Old 10-14-2012, 09:16 PM   #335
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I started hooking my Acewell 2853 up to my 1978 R80/7 today. it all went fairly well. My wire colors don't match what's been noted so far, but i think I've got it worked out.

My layout is:

Acewell--------------funtion----------------- BMW
orange-------------- turnsignal -------------new wire from signal
light green--------- high beam ------------ white
light blue -----------haz/Brake fluid -------blue/brown
purple--------------- nuetral ---------------- brown/black
gray -----------------oil pressure----------- brown/green
white ---------------- turn signal ----------- new wire from signal
black ----------------ground -----------------brown
brown --------------clock power -----------new wire to battery
red ------------------speedo ilumination---gray/black
blue --------------- fuel ---------------------- no match
yellow ------------- tach --------------------- black

left over bmw wires:
black/white - capped and using the new individual wires

blue
blue/green

I used the blue and blue/green as described in craydds' sketch below except i didn't wire into the acewell red, but the warning light I bought didn't come on... everything else appears to work though, so i'm wondering if i just got the wrong light.


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no pictures of my rat nest, i'll just embarrass myself;)
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Old 10-14-2012, 09:28 PM   #336
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Quote:
Originally Posted by craydds View Post
Tach cable has to go:


Gone:


Now, what do I do with the "hole" ? And the rubber grommet? Is there a solid rubber grommet - no hole for the cable?


Any ideas? What have my fellow inmates done?

I simply used some black silicone caulk to fill the hole in the rubber grommet... Later front-covers (after the electronic tachs came in ('+78?)) don't have the notch for the rubber grommet, if you would want to go that way....!

I also used some high-melting-point grease, like wheel-bearing grease, to plug the hole inside the front cover where the tach cable had been.....

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Old 10-15-2012, 05:48 AM   #337
craydds
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Originally Posted by bpeckm View Post
I simply used some black silicone caulk to fill the hole in the rubber grommet. Later front-covers (after the electronic tachs came in ('+78?)) don't have the notch for the rubber grommet, if you would want to go that way. I also used some high-melting-point grease, like wheel-bearing grease, to plug the hole inside the front cover where the tach cable had been.
Thanks, bpeckm! Good solution. I will order a new grommet, because the old one is splitting into pieces.
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Old 10-15-2012, 06:04 AM   #338
craydds
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Quote:
Originally Posted by benthic View Post

My layout is:

Acewell--------------funtion----------------- BMW

red ------------------speedo ilumination---gray/black


I used the blue and blue/green as described in craydds' sketch below except i didn't wire into the acewell red, but the warning light I bought didn't come on... everything else appears to work though, so i'm wondering if i just got the wrong light.
On my bike ('75 R90S) the grey/black is for instrument illumination, but is positive (+) only when the headlight is ON. That is why I used the BMW green/black connected to Acewell red; green/black is (+) when key is ON. On your bike ('78) the grey/black is (+) always when the key is ON ?
Good luck on your generator light. Test the lamp separately to make sure it lights up.
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craydds screwed with this post 10-15-2012 at 09:49 AM
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Old 10-15-2012, 10:53 AM   #339
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Originally Posted by craydds View Post
Thanks, bpeckm! Good solution. I will order a new grommet, because the old one is splitting into pieces.
If you find one let me know. I don't think they sell those seperately any more.
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Old 10-15-2012, 11:39 AM   #340
craydds
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If you find one let me know. I don't think they sell those seperately any more.
part # 62-21-1-351-554, look here http://www.maxbmwmotorcycles.com/fic...1&rnd=08102012 . I ordered one this morning.
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Old 10-20-2012, 05:39 AM   #341
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Quote:
Originally Posted by craydds View Post
Tach cable has to go:

Gone:
\

Now, what do I do with the "hole" ? And the rubber grommet? Is there a solid rubber grommet - no hole for the cable?


Any ideas? What have my fellow inmates done?

If make the grommet really warm (in boiling water?) won't it become flexible enough to slide it over your Acewell cable?




Still enjoying my new Acewell 4454 a lot. It's a hughe upgrade from the already great 2853

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Old 10-20-2012, 07:12 AM   #342
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My later r100 was made with an electric tach. Somebody with more knowledge than me can probably tell you what factory plug you need. If not maybe check the fische on maxBMW.com and look at a 1981 airhead.
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Old 10-21-2012, 11:03 AM   #343
craydds
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Originally Posted by MIOB View Post
If make the grommet really warm (in boiling water?) won't it become flexible enough to slide it over your Acewell cable?
You may be thinking of the Acewell speedometer sensor. There is no Acewell cable in place of the stock tachometer cable. The BMW tach cable is removed, that is why I need to plug the hole.
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Old 10-21-2012, 11:21 PM   #344
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Originally Posted by craydds View Post
You may be thinking of the Acewell speedometer sensor. There is no Acewell cable in place of the stock tachometer cable. The BMW tach cable is removed, that is why I need to plug the hole.
Ok, sorry, misunderstood
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Old 10-22-2012, 05:20 AM   #345
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Nice work, MIOB !! http://www.shedbuiltbikes.com/my-projects/ .
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