I have a 1990 F-250 460 E4OD 4X4 that i bought about a month ago and i took it on the highway and pushed the cruise control button and nothing happened it shows no signs of working or trying to engage or turn on or anything....what is wrong?

 

does your horn work?

 

When i got it it didnt but it was just unplugged so i plugged it in and its kinda weak sounding but it works its kinda wierd the air cond was unplugged to