Conference csc32::fxrs89::cycles

487.0. "Help! Fuel pump voltage problems / need advice." by CSC32::BSS::BUSSARD (In Too Deep to Touch the Bottom) Mon Apr 14 1997 13:33

    
    Rob L. 
    Bss::Bussard
    DTN 522-2144
    
    Question:
    
    How does the fuel pump vlotage feeds go into the pump?
    Last nite I had to get a tow home 'cause the pump quit,
    testing proved no +12v to pump.  -12v was available.
    Further testing proved the plug that the fuel pump plugs
    into was no +12v,  so I found another plug with the same 
    pinout just adjacent to my bad plug.  So I plug the fuel 
    pump into this plug (after disconnecting whatever that plug
    fed) and the pump works,  then the test light I had plugged 
    into the bad +12v comes on!
    
    I wiggle wires,  follow both feeds to no avail,  pull all the fuses
    under the tank shell,  and disconnect / reconnect all plugs 
    under the tank shell;  but the light remains on.
    
    So,  is the pump fused other than the main 30 amp fuse near the
    battery?  If so,  where?  
    Does the bike engine / running wiring run into the fairing to be
    terminated,  or is fairing wiring inherent to fairing accessories
    only?
    Does the bike engine / running wiring run into the headlight as so
    many bikes do?
    Is the pump on a switched relay;  if so,  relayed from what?  
    
    This problem happened before,  then after the bikes' sat for awhile,  
    the pump returned to business.  This time,  the bike sat for 3 hrs.
    to no avail.
    
    Ideas?
    
    Or if any of you have a 1984 Aspencade service manual,  could it be 
    tarced back to the power source?
    
    Thanks in advance,
    
    Rob