2003 Hayabusa electrical problems

[@Misadventures_Of_A_Yank]

Everything you showed is normal, the fan runs off a switched ground, always has power, that fuel pump power is only for the fuel pump relay, switched ground as well iirc.if you battery is dying like that, you have a draw. Start with any aftermarket accessories, especially if you have an alarm system. Throw that crap in the trash. They always seem to cause issues. Get a good voltmeter and connect it to your battery. See what the battery voltage is by itself, then with the battery hooked up to the bike. You should see a drop in bolts from what ever is pulling power. Then start unplugging stuff, 1 thing at a time. When you unplug where the draw if coming from you’ll see the battery voltage kick back up. Then start tracing the draw to the component and remove or replace it.

[@JimmyArjoe]

had the same problem starter relay has a resistor in it which burns out no charging properly

[@chicocop4774]

Never did figure it out. Mine seems fine now. Look into you starter relay

[@whatitdoblu]

Rectifier or stator

[@chicocop4774]

Battery still dies often. I keep it in a charger while not in use.

[@chicocop4774]

I never did figure it out. I posted this vid to see if we can collectively figure it out. I did fix the issue of the bike not starting while it’s hot. My starter was bad. Regarding the batteries dying so much. I changed the starter relay but that didn’t help. My bike still does the same. The battery dies for no reason and way sooner then it should

[@rickgidney1005]

Still doing my homework, I’ve never figured out the hot start problem. Replace the relay, make sure grounds were clean connections were clean etc. I might do my battery cables next but I bought a battery from full spectrum power, a $300.700 cold cranking amp battery from full spectrum power, p10-s. kicks ass when the bike is cold but will not push the starter through when it is hot. I still have to check my stator

[@dariuszsufner4126]

Dzień dobry ja mam ten sam problem I co u pana było Nie umiem tego rozgryźć to dzisiaj

[@dariuszsufner4126]

​@@rickgidney1005 Znalazł pan co to było zepsute

[@rickgidney1005]

@@dariuszsufner4126 ?

[@dariuszsufner4126]

You found the cause 

[@Shaft80]

Hey man, When you connect a battery, your gauges will cycle like that.. its normal. But I wouldn't tap it like that like you have been on the vid. Check various plug ins for corrosion. I'm having a fun time with corrosion right now on a big plug near the fuse panel. It's a yellow plug, look around you'll see it. check all your plug ins for corrosion.

[@davidbell3855]

i have an 06 busa it’s starting to run on two/three celender now can’t find problems

[@2001busa1]

My bike is doing the same thing. Pretty annoying. It was never taken apart or left outside so I really can't picture corrosion being the problem. I think it's something else. Last year if the battery was sought of dead but it started I would have to disconnect the battery for a second because the gauges would stay lit sought of. I don't know what the hell is going on with it but it's really pissing me off. I went from a battery problem to now what sounds like a starter clutch problem.

[@dwaderamcharan9329]

Ever sorted this out. Mines doing the same annoying thing.

[@dariuszsufner4126]

and what was it 

[@dariuszsufner4126]

and it is already solved

[@chicocop4774]

I can’t let the bike sit for more then s month with out the charger