Hitchcocks Forum

Dear friends in Enfield, (or where ever you are), in need of a stiff drink and guidance.


First off it's a 2003 Bullet 500 kickstart. That out of the way I was on here a week or so ago to say that the charging system had died and I'd ordered up a new Voltage Regulator from our illustrious hosts. There's always been a Powerbox, or whatever you call the Boyer system on the bike so I just got a new one of them. So received the new regulator and just cut the wires to length and slapped it into place. NO DIFFERENCE!!!


So I've been all over it again. over 30V AC going into the regulator but less then 2V DC coming out. I can't get past that statement in my head. over 30V AC in approx nothing out.


When the technical notes say check for 30V out of the alternator I'm checking that Open Circuit maybe when it's connected to the voltage regulator it can't actually drive any kind of a load at that voltage?


Maybe I should retest the 30V AC under the load of the Regulator... Thanks a million for your help, I'll give that a try.

Perhaps this will help:-

http://www.hitchcocksmotorcycles.com/pi ... 999_on.pdf

My subject for this thread was a tip of the hat to that technical note here on our hosts web site. I should have made that clearer.


If you read through that technical note:


Disconnect the two (violet) wires from the alternator either at the bullet connectors or the 4 block connector, and with your multimeter
set on ac volts, check for output across these 2 violet wires. (photo 1) This should rise rapidly to over 30 volts at half revs. If this
is ok, replace the wires, then test the output from the regulator/rectifier, across the black and red/yellow wire, but on the dc
volts scale. This should be between 13 and 14.7 volts at the same revs.


My initial post was trying to communicate that I've followed that procedure and found 30V AC going into the Regulator from the Alternator and effectively zero volts DC coming out of the Regulator.


Obviously that suggests that the voltage regulator is faulty. The puzzling factor is however that the voltage regulator in question is brand spanking new.



So the question really is give that technical note's information and my having 30V AC out of the alternator what else could be the problem. I really have to make sure I've got this correct before I start suggesting that the voltage regulator I was supplied is faulty.

Brian wave:


Swapped the two sets of wires coming form the alternator so the head light set plugged into the regulator and it's working. So even though I'm getting 30V AC from the alternator it's toast



Bought a Voltage regulator by mistake been one of those years.

Never mind, you now have a spare:-)
And an opportunity to upgrade the alternator.

The problem with using a multimeter is that it doesn't put any load on the alternator, it's best to check with a headlight or similar bulb first this will give a better idea of the output under load.

Now you have that spare reg/rectifier you can start getting in the bits to build another Bullet around it! A.