LIGHTS AND GAUGES PULSING

[primolee]

Hi everybody, I have a 2000 f450 4X4, I have noticed lately that the lights and gauges are pulsing, since it is a 450 the lights are always on so I notice it every time I drive. The alternator is showing around 14 volts and it starts fine, does anyone have the same problem? could it be a voltage regulator? is the regulator inside the alternator or is it external?. any help would be appreciated. Also is it possible to put an alternator from a 1993 6.9 on a 7.3? just wondering cause I have a new one I purchased for my '93 but never put it on. Thanks for the help....Bill




2000 f450 Dually 4X4
'69 Mach 1 s code 390 (just for fun)

[nccatfan]

Is that what it reads while its pulsing? Tried cleaning and retighening your grounds? Battery posts corroded? Couldn't hurt to wire-brush 'em down anyways.