Cb900 regulator into '83 interstate?

[kerryb]

Trying to help a friend put a regulator / rectifier from a cb900 into an '83 goldwing interstate. There are too many wires coming out of the rectifier tp satisfy the goldwings wiring harness. Questionn is...is it okay for there to be unused connection? Would there be another function beyond reg/recitifying that the goldwing has covered with another component? Such as the 7volt regulator. I'm no electrical engineer and we are trying to do this without spending the cash to get the exact replacement.

Any intuition appreciated.

 

[dan filipi]

I was trying to look at the regulator wire colors for that in google search. Can you post a pic?

 

[kerryb]

Unfortunately I'm not at the place where the wires are. Will have to work on that.

 

[pidjones]

I believe the CB900 uses a field excited alternator where the GL1000, 1100, and 1200 use a Permanent Magnet alternator, so no.

 

[kerryb]

pidjones » Sun Jul 12, 2020 7:44 pm[/url]":3fvke2rv]
I believe the CB900 uses a field excited alternator where the GL1000, 1100, and 1200 use a Permanent Magnet alternator, so no.

Really? If that is so, how does the system control or vary the amount of current supplied to charge the battery at the correct rate for its condition.

Note: the question is asked from a perspective of understanding the electrical system. I understand that my '78 cb750 uses a solenoid switch to control current to the field coil. But a permanent magnet system theory eludes me.

 

[pidjones]

kerryb » Sun Jul 12, 2020 9:18 pm[/url]":1m1msbdt]

pidjones » Sun Jul 12, 2020 7:44 pm[/url]":1m1msbdt]
I believe the CB900 uses a field excited alternator where the GL1000, 1100, and 1200 use a Permanent Magnet alternator, so no.

Really? If that is so, how does the system control or vary the amount of current supplied to charge the battery at the correct rate for its condition.

Note: the question is asked from a perspective of understanding the electrical system. I understand that my '78 cb750 uses a solenoid switch to control current to the field coil. But a permanent magnet system theory eludes me.

The regulators in the 4 cylinder 'wings dump one (of three) phase to ground to control the output voltage at about 14.7 - 14.8 volts. They sense through the black wire on the regulator. There are newer regulators that have both regulator and rectifier in one box, but they still do the same. On say the CB750F that I rescued last year, there were field control leads that ran through commutator rings to vary the magnetic field (like automotive alternators) which varies output. Our 'wing alternators put out full power and the regulator dumps to ground what it doesn't need. This is why LED lighting doesn't really help the electrical system unless it is being overloaded by heated gear, etc.

 

[kerryb]

Thank you Pidjones, for an explanation of this that I can understand.