Delco - Remey 27 si Alternator Question

[Payback]

I got a gen2 light on full time and the pass. side battery is not charging. I purchased a rebuild kit for the 27 si and did the re-build over the weekend. Re-installed the alternator and still won't charge the battery. In doing the repair, I didn't get this part in the kit, there is also one similar on the rear of the alternator that attaches with the black wire to the post. I do not know what they are or what they do so I am asking here.... And could they be a reason for the re-build not working?? I have been over most of the truck and everything wiring wise looks in great shape, no one has done any hackery to what I see.
What should I be looking at as a cause of the lack of charging, if the alternator re-build was done correctly?

 

[porkysplace]

It appears to be a condenser.

 

[Skinny]

Does the charge light come on key on engine off?

 

[Payback]

Does the charge light come on key on engine off?

All lights on the dash light up with the key on prior to starting. Once started, only the gen 2 light stays on. Now, I am assuming that if the light is on, the charging system is not working right. I have not tested it with a meter to confirm but will tomorrow. The mil. spec. voltmeter in the truck also works and I did not notice a charge while running.
The condensers, how can I find out more about them, I would want to replace those as well? All replaceable parts should be replaced when doing a re-build. Thanks in Advance...

 

[Tow4]

I got a gen2 light on full time and the pass. side battery is not charging. I purchased a rebuild kit for the 27 si and did the re-build over the weekend. Re-installed the alternator and still won't charge the battery. In doing the repair, I didn't get this part in the kit, there is also one similar on the rear of the alternator that attaches with the black wire to the post. I do not know what they are or what they do so I am asking here.... And could they be a reason for the re-build not working?? I have been over most of the truck and everything wiring wise looks in great shape, no one has done any hackery to what I see.
What should I be looking at as a cause of the lack of charging, if the alternator re-build was done correctly?

It's a capacitor for radio noise suppression. It doesn't affect alternator function.

Take the alternator and get it tested or do the test sticky at the top of the CUCV forum.