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  #1  
Old 07-30-2014, 12:34 AM
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stranded for the night

Hi all, been reading here on all the how to &it fixes on the om617.
I have installed one into a land rover and have had good results except for........the alternator.
What I was told to do by the shop that rebuilt it was to run the brown wires to the battery +side and the other wire to a hot on the ignition, & we now know the results parked along US35 in beautiful Kansas without juice.
Alternator did show low charge but when the lights came on the battery got drained.
Now after lots of reading on this mistake of mine, I'm still 500 miles from home, would i be correctly understanding that a 3watt in line bulb is required, between ignition and alternator?

Thank you in advance, this conversion could've never happened without this site.
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  #2  
Old 07-30-2014, 01:03 AM
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Answer

Quote:
Originally Posted by adreamin View Post
Hi all, been reading here on all the how to &it fixes on the om617.
I have installed one into a land rover and have had good results except for........the alternator.
What I was told to do by the shop that rebuilt it was to run the brown wires to the battery +side and the other wire to a hot on the ignition, & we now know the results parked along US35 in beautiful Kansas without juice.
Alternator did show low charge but when the lights came on the battery got drained.
Now after lots of reading on this mistake of mine, I'm still 500 miles from home, would i be correctly understanding that a 3watt in line bulb is required, between ignition and alternator?

Thank you in advance, this conversion could've never happened without this site.
Correct, this is for the exciter circuit.
The MB alternator will not function correctly without the bulb.

.
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  #3  
Old 07-30-2014, 01:10 AM
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Thank you very much, would the bulb for the aftermarket guage work? The line passes right by it &it figure it could be used to light up the guage when the alt might go bad at night,improvised idiot light.
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  #4  
Old 07-30-2014, 01:18 AM
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Hmm

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Originally Posted by adreamin View Post
Thank you very much, would the bulb for the aftermarket guage work? The line passes right by it &it figure it could be used to light up the guage when the alt might go bad at night,improvised idiot light.
The resistance of the bulb is critical.
If it is a 3 watt bulb, it may work, others usually won't function.

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Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
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1980 240D
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  #5  
Old 07-30-2014, 12:43 PM
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thats not just for MB, all Bosch alternators require a 3W bulb in the exciter.
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  #6  
Old 08-03-2014, 01:08 PM
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Thanks All, did make it back home on a new battery .......barley, very dim lights, lol.
Did take the alternator back to the shop for a repair &it it was acknowledged that it was only putting out 12amps.
Not sure when i'll get it back, he's very good along with proud of the work he puts out so it could be a bit till it gets returned.
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