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Thread: K75 Compatible Bosch Starter Relay Replacements

  1. #1
    Registered User kentuvman's Avatar
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    K75 Compatible Bosch Starter Relay Replacements

    Hi Gang,

    Mine is an '87 K75s - About 2-weeks ago, last time I rode her, forgot to unplug the always hot GPS connection. Was short on time today trying to meet a friend for the Twins Game and my time became shorter when I was greeted with a dead battery. So, thought to throw on the battery charger and use the "start" function to get her going, figuring by the time I covered 30 miles, the battery would be charged & I could hook up my tender at my friends place.

    Hooked up the charger & lights came on but when I hit the starter button it was a slow rah rah rah until the starter relay got stuck & bike started trying to crank on its own - so quickly disconnected positive terminal, set the charger on a normal charge and hopped on my R65LS Airhead (nice having a spare bike

    This evening, with battery all charged, I lifted tank and used a busted socket wrench and a light ball peen hammer and gave the relay a nice healthy tap. When I connected the positive cable to the battery, all was good and bike started up!!!

    So, I wrote down the Bosch stater really number which is 0 332 002 161
    12V 75A

    I looked on Ebay and see some that are close with the last 3 numbers being different, like 151 etc.

    Did some more searching and saw a similar question posted on another forum with no answer - so with this said, here is the question and hoping someone in our forum can provide insight here:

    *********

    I thought it might be worthwhile to attempt to clarify which starter relays can be used.

    the unit on my bike is bosch part # 0 332 002 161

    the link in this thread http://www.motobrick.com/index.php?t...19736#msg19736 is to bosch unit # 0 332 002 150

    I called texas industrial and they checked with a technician who said the 150 would work fine. The difference being an added resistor to the 161 module.

    There is also this module being sold as an "exact bmw replacement" here http://www.euromotoelectrics.com/BOS...p/rel-k008.htm

    If you look at the diagram imprinted is contains 2 diodes and is identical to the diagram on the bosch unit # 0 332 002 156 (http://www.texasindustrialelectric.c...0332002156.asp)

    Not to confuse matters but there are Tyco part numbers which correlate to these bosch units.

    V23232 D0001 X001 corresponds to the bosch 150. This tyco unit is noted as workable in the thread listed above, which would jive with what texas industrial told me re: the 150 unit.

    V23232 A0001 X003 corresponds to the bosch 156


    It appears there are 2 scenarios.

    (1) the bosch 0 332 002 150, and tyco V23232 D0001 X001 are viable alternatives to the 161.

    (2) if the euromotoelectrics site is correct in listing as OEM a module showing 2 diodes, then along with (1) there is also the option of the bosch 0 332 002 156 and tyco V23232 A0001 X003

    Does anyone have 1st hand experience with these other relays? It would be good knowledge to know if there are 4 alternative modules, if only to have a cheap spare.
    Ken Tuvman
    Excelsior, MN
    K75s, R65LS, R60/5

  2. #2
    Curmudgeon At Large Bobmws's Avatar
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    When I had that issue years ago on my K100 I opened the relay, filed the contacts smooth and forgot about it.
    Bob Weis
    '04 K12RS - Hannigan Hack
    www.earplugco.com

  3. #3
    Registered User kentuvman's Avatar
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    My concern is being in timbuktu and having the starter relay activate out of the blue. As long as battery is charged, will the relay remain open or is there now the potential for it to get stuck?
    Ken Tuvman
    Excelsior, MN
    K75s, R65LS, R60/5

  4. #4
    Instigator cele0001's Avatar
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    Potential for relay to get stuck is only during cranking. If it doesn't get stuck then it will not do it "on its own"
    I want to be unique, just like everybody else.

  5. #5
    Instigator cele0001's Avatar
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    If you have same relay with diodes take it. Diodes are there to prevent kickback so it is a better relay then the original.
    I want to be unique, just like everybody else.

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