I have an 05 F150 that has it's third bad alternator. The truck has 118,000 miles on it, (yes that is correct). The first alternator went at 3,000 miles the second at 101,000, now I am getting only the left half of the dash lights again, and a battery light. Same symptons as the other two times. The truck is an STX, I run the fog lights most of the time. I always have a GPS and XM radio plugged into the 12v sockets while driving, but remove them when I shut off the truck. The vehicle is well cared for and all maintenance is done as called for in the manual, transmission and colant flush, plugs at 100,000. If anyone has any ideas my Ford dealership has overlooked, I would appreciate them.

 

Are these Ford replacement alternators or aftermarket stuff? Seen it happen b4, you can get parts like that.

 

Could try an alternator that puts out more juice...