[FC] thanks for help w/one-wire alternator...but

[Wild8bill at aol.com]

Thanks to everyone who sent diagrams and links and info on alternator  
conversion. I have an old casting, so I determined that "1"=F and "2"=R. I wired 
 up according to provided diagrams, and I no longer have the battery drain  
through the alternator. I jumpered the 2/R post to the BAT output instead 
of  using a splice elsewhere.
 
here's what I found: 
connected system puts out 12.85vdc at alternator/battery
turning on lights and heater fan drops vdc to 11vdc +/- at dash, but stays  
at 12.8 +/- at alternator/battery
disconnecting alternator at BAT connection from battery, alternator reads  
7.5vdc across BAT and ground
 
--->through all tests, the GEN dash light remains on and  bright<---
 
do I need to get a different GEN bulb? someone said that they got a smaller 
 bulb and that fixed a problem with the alternator activating.
 
also, since the disconnected alternator reads 7.5vdc, is it bad, or is that 
 normal when it's not being activated by the 2/R wire (also disconnected 
from the  BAT post)?
 
thanks,
 
Bill