Testing yamaha qt 50 rectifier

SOURCE: Voltage regulator on '02 Buell Blast

I don't have a manual yet so if anyone can offer any advice or point me toward an online wiring diagram or somethingI did it by ruling out my stator - knowing the rest - meaning plug wires and coil are good, check the connection of the regulator to the stator for elecrical flow at those two pins on the regulator side - there should be zero on both - current should only come from the stator, not to it - other wise you have bleeding - thus the regulator is bad - under your body above the rear tire on the left side you'll see a metal waffled box with wires heading out of it - thats the regulator,,,

SOURCE: 83 yamaha tt600e no spark

The CDI unit on the 83 model (TT600) is located under the fuel tank and suffers from heat
exposure.The solution is to get specialist help to open up the sealed CDI unit and repair/
replace internal connections (which are readily available electronic components)
When you re-install it put some heat shielding material there to protect it and this
will be OK as repair will utilise stronger parts,I think.
Later models have the CDI unit moved to the head-stem area.

(this info from a Non-mechanic who remembers what was done to his TT in Australia, many years
ago)

SOURCE: wire connector between stator & voltage reg/rectifier burnt

your voltage/reg. can be tested in a couple different ways check ground res. check res. then revs. bias on diodes you have ac in dc out it sounds like you may have a diode gone bad allowing ac curent to flow causing the wires to get hot

SOURCE: wiring from stator to regulator/rectifier to cdi on chinese atv

Hi and welcome to FixYa,

Would this help? From the stator:

• 3 yellows to the rectifier/regulator combo;
  
• blue & green from the pulser coil to the CDI.  The blue here is actually connected to the ground.  The CDI's ground wire is black/white;
  
• (near the stator) single blue to the CDI.
  

SOURCE: which post is which on generator on a 1975 sportster?

the post should be the same as an original. The wires should be green and tan. Green wire goes to the post towards the front wheel and the tan to the post nearest the engine. Don't forget to "polarize" the generator before starting. procedure is in the service manual. Momentarily short between the battery positive post and the field terminal.