Hi,
last year, what seems to be the Original Alt died on the 1988 GL1500 @ 101K (I'm thankful and I was not far from home, I was able to remove the batt, charge and ride home)
I bought a Chinese replacement $110 from DB Elec.
went 11K and 17mos later, the replacement died
I checked and I'm getting 12V with the key on to the exciter wire
BUT in my research the past couple days, I found something Interesting and I'm wondering if this is what is plaguing these Chinese Alts in failing quickly.
The Original ( as far as I know ) alt, that I took out, had a Condenser. I did not install it on the replacement alt, it didn't come with one and there is NO Capacitor in the Alternator
in the parts diagram ( is it somewhere else? maybe )
was it part of a Honda Bulletin ? maybe
I did a little research about 30mins and it seems, supposedly the Condenser HELPS with the charging circuit and may help lower the temps of the Rectifier and Volt Regulator..
by smoothing out the noise in the current
could this be why these's alts are failing ?
When you replaced your Alt, did you install the Condenser?
Did the alt then fail 5-15k miles ?
PS: can I install a 90a/or 95a Alt on a 1988 ? I've read folks have issues squeezing it in

and from the pics I've seen, looking at the mounting flange, the alt body definitely looks bigger.