My fzr 600 keeps blowing the main fuse, if i try to put a new one in it blows right away (even with the ignition off) i replaced the alternator and the voltage regulator because the old one melted. is it a short in the wire or what??
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Are you blowing the 80 amp fuse? If yes check to make sure the battery is in the correct way if it's in the right way disconnect the wiring at the alternator, if the fuse still blows the black/red wire is grounded between the junction block and the alternator if the fuse doesn't blow it's the alternator. I hope this helps, Take care.
Low battery will not blow a fuse. If it blows right away when you turn on the ignition you have a main electrical short. Disconnect the regulator to the battery connector at the regulator to see if you have a shorted regulator. After the main fuse blows you should not have a battery drain so figure out also why your battery is discharged. Is your batttery no good. This would not blow a fuse in any case. Was the battery out recently, or disconnected. Make sure it is installed correctly and none of the wires are connected incorrectly. THEN you will have to start tracing the wiring from the main fuse to find the short circut.
Isolate the problem by removing all small fuses, then replace main fuse with an ammeter that will measure 40 amps or more. Replace small fuses till ammeter shows a larger current draw. If this doesn't show problem, the problem is in the starter or charging circuit. Let me know what you find.
Jim
Usually that fuse powers the alternator and the fuse box. It would have to be a big short to ground to blow that fuse. Its possible the main wire to the alternator is touching a metal spot, or the alternator is shorting out inside when it is running. What is draining the battery may be something else, or the battery could be discharging after the fuse blows if the alternator is not charging it.
You stated your loadtested battery? Try another known good battery as I have seen very odd things happen with these maintainence free batterys sometimes such as polarity swapping. This would cause the same main fuse blowing as if you were hooking the battery up backwards.Then begin by un plugging the ignition switch. If fuse blowing stops the problem is in the harness somewhere between the fuse and ign. switch. Possible wire pinched or rubbed through and grounding. From the ignition switch the main fuse voltage goes to the distribution(common) side of the fuse box. Inspect the wiring from the switch to the fuse box. This problem has to be pre fuse box in location otherwise the lower amperage circuit fuse in the box would be blowing. Good luck!
you will need to try a new battery, unfortunatly sometimes jumping of a larger battery can spike the regulator, so when the new battery is fitted put a mulimeter across the battery, should read just over 12v engine stopped and rise to 13.5-14v with the engine running.
with the fuse blowing without turning on the ignition woul indicate a bare wire touching ground somewhere finding just where that is occureing is a long process other possible causes are that there is a short in the starter solonoid or that your ignitionswitch is open circuited
Kevin, chances are that when the new alternator was put on. The wires were put too close to something either hot or that it can rub on. If you do not find that this is the problem then return the alternator to the store and have it tested for internal problems. Bad Alternator can do this. Good luck
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