Going to say the same thing...14 volts isn't that high and your gauage may not be completely accurate. Now I had an alternator on my trooper that went bad and was charging in the low 20's...it blew out every light on the truck (driving at night)... got lucky though the computer was fine.

1995 Trooper LS (OME Coils & 2" spacer, Rancho 9000, Nitto Terra Grappler 34", K&N, ARB Snorkel, Calmini Rear Bumper) In garage (9000 winch, custom S. America winch bumper, Delta Cams, Tera-Low 3.07)