Forum whore
So I,ve just rebuilt the xt 600 after the fifth gear problem and followed the book......filled it with oil and started to crank it over by the electric motor and smoke everywhere... found a black wire coming from the loom to the negative side of the battery had completely melted the plastic coating.,
What have I done to cause such a short circuit? have I done something wrong when fitting the alternator? answers on a postcard to ......any help more than welcome
111000101000100010011110
yup, if the alternator is the only bit of electrics you have touched then thats very likely to be the problem. Though was the smoke caused when you cranked it over? or when you turned it on?Originally Posted by thepom
"A shark on whiskey is mighty risky, but a shark on beer is a beer engineer" - Tad Ghostal
Forum whore
It would not crank over from the starter motor so I checked the fuse and moved some wires then it just cranked over for a second then started smoking....I had the ignition on but no problems...only started smoking when it turned over for a second...
111000101000100010011110
when you say moved some wires, like pushed them around, or plugged them in different places?
"A shark on whiskey is mighty risky, but a shark on beer is a beer engineer" - Tad Ghostal
Forum whore
just moved them around,little shake here,shake there.....
111000101000100010011110
hmmmm, I would recomend tracing the faulty wire back to where it shorted and fixing that then, may need to take apart the loom a bit though
"A shark on whiskey is mighty risky, but a shark on beer is a beer engineer" - Tad Ghostal
Forum whore
just checked the wiring diagram and the only black wire goung back to the earth comes from the reg/rec ...which has 3 white wires coming from the alternator....
Forum whore
It's probably not a short circuit, just you have missed a wire. Is the black wire from the loom quite skinny? There should be a skinny black wire , and a honking big fat wire (cable really) going to the negative terminal. Fta cable doesn't come out of loom, it's a separate cable.
Skinny wire handles earth for bike electrics, fat cable handles high current for starter and alternator (earths the engine unit). Hunt around for a fat cable, trying to put starter motor current down the skinny wire will def burn it out.
Forum whore
yeah it was the skinny black wire that melted the plastic.....it is joined together with a bullet connector...never thought it should have a bullet connector there and it was covered in electrical tape.So you think I might have missed a connector somewhere?
Forum whore
just pulled the starter motor and slaved in to the battery and that works fine,looked round for more cables but the fat neg goes to what looks like the starter relay and then to the starter,will look at the reg rec next which is under the tail cowl but have to go to work now so it will be tomorrow,thanks for the help so far,all I,m worried about is there anything I removed like the side casing which can cause it to short out from fitting it wrong?I did remove the rotor to split the casings but never removed the stator assembly....
Forum whore
Fat *negative* goes to starter motor ? ie that implies positive earth ?
111000101000100010011110
so you got fat wires coming from both battery terminals right? one goes to starter relay then starter, other goes to a frame/engine ground.
"A shark on whiskey is mighty risky, but a shark on beer is a beer engineer" - Tad Ghostal
Forum whore
Yes. Should be a fat cable and a skinny wire on each battery terminal. Positive one usually red , usually goes to starter. Negative one usually black, usually goes to earth (maybe not directly) . Def want a thick and a thin on each terminal. Don't put starter current through a bullet connector !
Forum whore
Don't assume that a black wire on a Japanese bike is earth - they don't use logical colour codes like Lucas.The starter wire will come from the solenoid,the other side of that will go to the battery....it's a pretty direct link and should be obvious.The negative wire from the battery will just bolt to the frame somewhere.
Double shot!!
You have left the heavy negative lead off. It goes from the battery to the frame.
Steve
"I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
"read what Steve says. He's right."
"What Steve said pretty much summed it up."
"I did axactly as you said and it worked...!!"
"Wow, Great advise there DB."
WTB: Hyosung bikes or going or not.
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