DO NOT attach a condenser to the field circuit. Unless you're running an original-equipment AM radio, the condenser on the Arm. terminal is not required. It was there to filter out RF frequencies created by the commutator bars of the armature.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!