Question about 2003 Gas Gas EC 400 FSE

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Voltage leak My 2002 FSE400 is testing my love (again) My latest problem is my battery is going flat all the time . At first i thought my original battery had done it's time so I replaced it

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And now the new one is dead too. It charges 13.5 volts which i think is ok but I did a battery leakage test with the ignition off negative cable off the battery and multimeter (set on volts) between the negative terminal and cable and it seems to be leaking though the circuit that has the 3 amp fuse. I can't find a wiring diagram anywhere to tell me what this circuit supports. Can anybody tell me what fuses power what so i can find the culprit stealing my electricity?,Voltage won't tell you anything about a battery being drained. Two things to check. 1. insert an ammeter between the negative battery post and the ground wire(s). With ignition off, you should read zero (or single milli-amps). That will tell you if you have some sort of parasitic drain. if it is 100's of milli-amps, then you have a parasitic loss. If that is the case, then you need to start opening circuits to try and find the circuit which is causing the loss. once you open the circuit and the drain drops, you've found the bad loop. now you just have to find the issue with that loop. 2. if you read zero or single milliamps, then you probably aren't charging. you should also use an ammeter to see if you're putting current back into the battery. If you are, then you need to see that you have a voltage rise at the battery terminal when the bike is running (probably over 3K rpm). You have to look at both voltage and current to get a good handle on the charging system. ,,,

Posted on Nov 10, 2008

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Voltage leak


and now the new one is dead too. It charges 13.5 volts which i think is ok but I did a battery leakage test with the ignition off negative cable off the battery and multimeter (set on volts) between the negative terminal and cable and it seems to be leaking though the circuit that has the 3 amp fuse. I can't find a wiring diagram anywhere to tell me what this circuit supports. Can anybody tell me what fuses power what so i can find the culprit stealing my electricity?,Voltage won't tell you anything about a battery being drained. Two things to check. 1. insert an ammeter between the negative battery post and the ground wire(s). With ignition off, you should read zero (or single milli-amps). That will tell you if you have some sort of parasitic drain. if it is 100's of milli-amps, then you have a parasitic loss. If that is the case, then you need to start opening circuits to try and find the circuit which is causing the loss. once you open the circuit and the drain drops, you've found the bad loop. now you just have to find the issue with that loop. 2. if you read zero or single milliamps, then you probably aren't charging. you should also use an ammeter to see if you're putting current back into the battery. If you are, then you need to see that you have a voltage rise at the battery terminal when the bike is running (probably over 3K rpm). You have to look at both voltage and current to get a good handle on the charging system. ,,,

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