2001 limited 4wd

Hello, This is my first post. I own a 2001 Toyota Sequoia with 217,000 miles in great condition. The other day, when a snow storm hit, I went to use my 4WD and it would not engage. So I decided to look into it further. I saw a post that said to spray the actuator with WD40 and give it a slight...

From what I have been reading the '01- '02 have a 100amp alternator and '03- '07 have 130amp. Can a alternator from '03 go on the '01 sequoia fitment wise? I have a '01 limited 4wd and the alternator is not putting out enough amps causing my lights be be dim on the interior and exterior. The e...