nc30 Battery flat

[magg]

At 5000 rpm with lights on you should see 13-14 volts at the battery terminals. Start checking the charging system. Unplug the rect/reg and measure resistance between the three yellow wires, should see about one ohm, and infinite resistance between any yellow wire and the frame.

[rob b]

Thanks.
Should the bike be running to do this.
Thanks.

Rob.

[magg]

No, just connect the multimeter leads, with the multimeter set to 1 x ohms, to the yellow wires at the plug after you remove the plug from the rect/reg.

[rob b]

Thanks.
I will ask my mate to come & check with his mtr.
I will keep you informed or if anybody any more advice please let me know.
Thanks.

Rob.

[rob b]

Hi my mate has not been round with his mtr yet.
But I took the reg of & unpluged it & one of the yellow wires in the plug was looked like it was all burnt & the same on the pin on the reg were it plugs in.
Hope this makes sense.
Any ideas?
Thanks.
Rob.

[magg]

Yes check the wiring from the alternator to the rect/reg. It all has to be in good condition, no burnt contacts, broken wire etc. Have you done the resistance check yet.

[rob b]

Thanks.
No not yet have to wait for my mate to come round with his mtr.
Could it be the pin in the conector block thats cousing the problem?
Thanks.

Rob.

[magg]

It will not help, perhaps but you still need to check the complete system. The resistance check on the three yellow wires will tell you if the is a problem with the alternator and its wiring. The other thing to check while waiting for your mate and hus meter is the alternator loom connector that is located in the V area above the crankcases. This connector and its three yellow wires can fail also.

[rob b]

Hi.
I think it mite be the alternator I dont know for sure.
I wish there were somebody round here who could help me out not too. clever with elictrics ha ha ha.
How much of a job is it to change one & does anybody know how much they usely go for,
Thanks.

Rob.

[magg]

How do you know it is the alternator?