White Outdoor Lawn Tractor 2150

Question

Dear Sir:My White Lawn Tractor 2150 panel displays a red discharge light anytime a load is applied (headlights,PTO, etc) It has recently had a tuneup and runs like a champ!Could it be the alternator? And where is it located? Also ratcheting the ignition switch seems to bring off the light temporarily.Please respond to [e-mail]