[delta gumbo]

i have a 98 300 an it keeps blowing one glass 10amp fuse as soon as i attach the last battery cable. so i checked the whole system an everything is fine. after a 4 hour tear down i found a green wire at the back of the bike that plugs into the regulator that keeps blowing the fuse so i cut open the harness an looked at the whole green wire. so today i put the new regulator on an the same thing as soon as i plug in the green wire the fuse blows. but i looked at the green wire from the tail light all the way to the headlights an its not damaged in anyway so what should i try next. or should i just take it to the shop.

thanks
Martin

 

[mud99]

Green is ground wire, Welcome to the forums

 

[Helmut]

Welcome to the forums. I don't know if it will make any difference, but the Fourtrax 300 is supposed to have 15 amp fuses, both fuses are 15 amp. I bet it will still blow the 15 amp fuses, though.

 

[Helmut]

I would try unplugging the red wire that plugs into the regulator/rectifier. Plug the green wire back in and put a new fuse in and see if it blows. If not, plug the red wire back in see if it blows. I'm guessing it will and I would say the problem is in the red wire. Like Mud stated, the green wire is the ground, so it wouldn't matter if the insulation was gone and rubbing the frame and if it was touching a hot wire, it would blow the fuse before you plug it into the regulator. If it does blow when you plug the red wire in, trace the red wire back to your your key switch and through to your handlebar switch. The problem could also be in your handlebar switch, CDI, or in the bulb socket for the neutral light.

 

[delta gumbo]

i tried unplugin the red an asoon as i put the green in with the red unhooked it blew i put a new fuse in an pluged the red in an it did not blow but asoon as i put the green in it blew

 

[Inglorious BSTRD]

sounds like the rectifier is shorted to ground. get a new one and all your troubles will be solved. I saw one on ebay the other day for like $20

 

[Helmut]

sounds like the rectifier is shorted to ground. get a new one and all your troubles will be solved. I saw one on ebay the other day for like $20

He said he already put a new one on.

 

[Inglorious BSTRD]

oops I missed that. got me curious now gonna have to go out and look at mine and see how its wired. It seems like it has to be a componet that is shorted to ground cause it cant be a wire!?

 

[delta gumbo]

i was looking a wiring digram on here an it could only be about 3 things but i cant rember them let me find that pic an i can tell you guys what i think

 

[Helmut]

i tried unplugin the red an asoon as i put the green in with the red unhooked it blew i put a new fuse in an pluged the red in an it did not blow but asoon as i put the green in it blew

Maybe you have a problem in the tailight socket. I would try unplugging the wires that run to the taillight and then plug the green wire back into the regulator and see if the fuse blows.

ADDED: Nevermind, that wouldn't cause it to blow unless the lights were on.

 

[Helmut]

 

[Inglorious BSTRD]

Try to unplug the big harness plug up by the coil then put a new fuse in and see if it blows

 

[delta gumbo]

i think from my little bit of research that it might be the altanator or the ignition pluse because they are tied to the regulator through those yellow wires so if they were grounded out they would draw a charge through the regulator

Try to unplug the big harness plug up by the coil then put a new fuse in and see if it blows

i will try that

 

[Helmut]

i think from my little bit of research that it might be the altanator or the ignition pluse

I don't think it would be either of those, but I could be wrong. Try unplugging them, one at a time, and plug the green wire back into the regulator and see if it blows the fuse.

 

[Inglorious BSTRD]

I agree. seems like you should be able to use a multimeter and check those two items cause if it is shorted to ground you could check the resistance and if it is shorted there should be no resistance. The coil would be easy cause there are only two wires. The stator on the other hand you really need to know what wires do what! Good luck and let us know what you find out. If you want I could check the resistance on my coil and that would give you a baseline to go by

 

[shadetree]

i have a 98 300 an it keeps blowing one glass 10amp fuse as soon as i attach the last battery cable. so i checked the whole system an everything is fine. after a 4 hour tear down i found a green wire at the back of the bike that plugs into the regulator that keeps blowing the fuse so i cut open the harness an looked at the whole green wire. so today i put the new regulator on an the same thing as soon as i plug in the green wire the fuse blows. but i looked at the green wire from the tail light all the way to the headlights an its not damaged in anyway so what should i try next. or should i just take it to the shop.

thanks
Martin

this is probally a dumb question...and i'm only gonna ask because i've done it a few times..but..by any chance is your battery leads hooked up backwards ??..this will blow a fuse in a heart beat.

 

[Helmut]

You might be on to something Shadetree. I never thought about that, but I've never hooked one up backwards, yet.

 

[shadetree]

You might be on to something Shadetree. I never thought about that, but I've never hooked one up backwards, yet.

lol helmut..just means i've worked on more bikes than you !.lmfao..but..for real..i do know this will cause a blown fuse real quick !.

 

[Helmut]

You might be on to something Shadetree. I never thought about that, but I've never hooked one up backwards, yet.

lol helmut..just means i've worked on more bikes than you !.lmfao..but..for real..i do know this will cause a blown fuse real quick !.

Maybe I'm just more careful than you. LOL. I try to be careful around batteries because one of my buddies had one blow up in his face once.

 

[shadetree]

You might be on to something Shadetree. I never thought about that, but I've never hooked one up backwards, yet.

lol helmut..just means i've worked on more bikes than you !.lmfao..but..for real..i do know this will cause a blown fuse real quick !.

Maybe I'm just more careful than you. LOL. I try to be careful around batteries because one of my buddies had one blow up in his face once.

oh...i'm careful...i just get in a hurry sometimes..and don't watch what i'm doing..lol...never had a battery blow up on me..and don't want one to either !..lol.