Where to find regulater rectifier on nsr 125 r 2001

if it is a new battery and not an old dead one,then you need to replace your regulater/rectifier

yellow=ac 3 pole I think 60 volts freq. changes with rpm It will shock you.

Hi if battery is fully charged the charging system wont put in more than it needs so 12.5 volts is adequate try putting the lights on and raising the revs and checking the output at the battery if its still the same or lower then you could have a problem usual faults are with the voltage regulater rectifier breaking down if you follow the wires back from the alternater/generator should be three yellow wires to an aluminium finned block under the sidepanel check the output to this unit from the alternater and see if its the same or similar output if your only getting 12.5 volts from the alternater then your problem is with your alternater and it may need replacing but if voltage is good 13.5+
then you either have broken wires to the regulater rectifier or a faulty regulater rectifier a good swop
if a genuine regulater rectifier isnt available and the fact that they were allways a bit trashy any way is to fit one from a honda cb250 superdream as they were much easier to find and cheaper to buy second hand from a breakers yard

hi,this might help,if you have a digital volt meter,take a reading across the battery at rest(key off)should be about 12.8-13.2v.start the bike and take a reding across the battery if the bike is charging properly the meter should read between 13.8-14.2-14.4v.to check if the regulater is working correctly,connect the meter across the battery and slowly lift the rpm from idle up to about 3-3500rpm,the reading on the meter shouldnt vary much more than 1-1.5v across the rev range,if the reading fluctuates up and down with the rpm(more than about 1-1.5v)then the regulater is faulty,and obviously if the battery is showing no difference from rest to high rpm then the stator is probably at fault..hope this helps..cheers

sounds like oxidization on your timing plate take it out and clean it with a peice of sand paper

Hi and welcome to FixYa,

Would depend to which coil:

• ignition coil - green to ground & black/yellow to CDI;
• pulser coil - blue & green/white to CDI;
• exciter coil - black/red to CDI;
• stator coils - 3 X yellow to rectifier/regulator combo.

Good luck and thank you for asking FixYa.

i bought a multimeter tested the alternator ok over 14 volts then i tested the rectifier still 14 volts then i tested the regulater only 4volts solution was to replace rectifier and regulator with a boyer bransen power box

may be the rectifier or voltage regulater, use test meter to see what voltage is at the regulater

yes it could sounds like your rectifier i had a 1978 zx 600 do the same thing