battery light?

[phi-tec]

hey guys, matt jst replaced my alternator with a 2nd hand one, after mine shat itself, everything seems to be fine, matts checked with multimeter and all good, went to supercheap to check, all good, but once i hit past 5ish6k'revs the light starts to turn on, any idea what it might be? will swap my friends relay to see how it goes , but still puzzled thanks!

[Taz]

have you checked the flux capacitor? sometimes they can play up and screw with your battery voltages at certain rpm speeds - sounds like you need a new one!

[payaya]

Did you test your charging circuit under load as well??

[phi-tec]

Did you test your charging circuit under load as well??

yeah matt did that, and also supercheaps device does that too

[payaya]

How did you test it under load?? And I have never used a what super cheap use but how does their test put an electrical system under load?