HI again got a problem with my nc30 again. CHArging 14.8 when lights are off but starts draining battery with lights on any idea's Phil

How do you know lights on drains the battery.

Battery voltages please.

Lights off:

Engine at idle
Engine at 5000rpm


Lights on:

Engine at idle
Engine at 5000rpm

will get charge rates to you have checked altinator all checks out reg/rect is new old 1 burnt out and replaced plug,lights off is 14.8 @battery that drops with side lights on and then with main lights on you can watch the volts on meter dropping ie 12.5-12.4-12.2 ect and drops below 12 whilst running. it like it not charging with the lights on

What reg-rec did you replace it with?

A after market 1 from cbr

ok guys here's your info battery = 12.25v so thats fucked, idle lights off = 14.20v 5000rpm =14.9v Lights on idle = 12.15v 5000rpm = 12.30 so put another ok battery on and battery = 12.8 ok, idle =14.2 5000rpm = 14.9 lights on idle = 12.20v 5000rpm =12.60 so checked everything else altinator ac = 47,48,49 ac/v at yellows so thats good, tested resistance all at 00.6 again good so put put used r6 reg/rect on in replace of the new aftermarket 1 and we have battery = 12.80v idle lights off = 14.25v 5000rpm = 14.80v lights on idle 13.95v 5000 rpm = 14.25v with high beam ect all on so looks like a duff new reg/rect cheers for input Phil

Yep.

CBR aftermarket regulator would be the problem.

Going to assume it's one of the cheap 20gbp Chinese knock offs?

There shite!

The R6 r/r is fantastic value for money.. 2nd hand ones can be had delivered for around 20gbp if you shop hard enough.

yeah chinese shit m8, why would it not charge while lights are on?

congrats on getting the problem sorted!

ive got the same problem and have recently purchased a R6 reg
problem is i dont have a clue what i need to do with the wiring coz the R6 reg didnt come with any wires on it
could anyone tell me which colours from the original wiring i would need to connect to which pin on the R6?