Thanks,
Well the problem is ... With No Connections and running engine, I am having +15(Varying) voltages on DF terminal of my dynmo, and -15(varying) voltages on D+ terminal of my dynmo.
It should give +15(varying) voltages on both D+ and DF terminals.
AnyGuys having same kindof dynmo can solve this issue for me, all they need to do it, temporarily disconnect DF and D+ terminals from their dynmo and use VoltMeter to check voltages on DF and D+ terminals while engine is running.
Also to check what degree the dynmo heats up with connection and without connection to cutout and related assembly.
Hopefully these checks and tests help me to resolve my isssue.
Thanks