jason8887 wrote:
My alternator is a 3 phase unit with 3 yellow wires coming out of it. at 4000 rpm I am getting about 60V AC from any of the wires when my digital meter is set to the 200V AC range.
That sounds good. Where are you measuring the AC? Your symptoms sound like the three yellow wires are not making good contact to the reg/rec.
jason8887 wrote:
with the bike idling, I am getting about 12.2V DC at the battery, and at 4000 rpm, I am getting about 12.4V DC, with the volt meter set to the 9.5V DC scale.
This means you definitely are not getting output from the charging system. (The slight rise in voltage at 4000 rpm is because the ignition uses less power at higher rpms, so the battery voltage doesn't get pulled down as far as at idle.)
jason8887 wrote:
I have placed a regulator/rectifier on the bike that I know works (it's off of a running kawasaki) and taken all of these measurements. Even with the good r/r, I am still not getting enough juice to the battery.
If the reg/rec is good, then it has to be wiring. As geerbanger mentioned, there could be something else shorting out, but I don't see any diode blocks in your diagram that would affect the charging system. Basically all you have in the path to the battery is alternator, reg/rec, and the wires (which do go through the connection at the starter solenoid). The charging system doesn't even go through a fuse before getting to the battery.
jason8887 wrote:
Does anyone know the answer to the following question:
If I disconnect the r/r from the wiring harness (ie, only have it connected to the alternator, nothing else) should I get 12.5-14.5 volts DC between the white/red lead and the black/yellow leads?
If the reg/rec is disconnected from the bike but the 3 yellows are still connected, (and the bike is running), you will get a high DC voltage reading on the WHT/RED-to-BLK/YEL wires. That's because the brown wire needs to be connected to control the output voltage. The brown wire gets switched to the battery-positive through the ignition switch.
Post edited by: loudhvx, at: 2006/10/04 10:59
Post edited by: loudhvx, at: 2006/10/04 11:01