I just purchased another 94 f150 4x4 after crashing my previous one and noticed that the blue box that is about 1x4x4 with two connectors was taken out. Anyone know what this goes to? It mounts under the dash near the steering colum. The only things I can think of that don't work is the cruise and the horn, but I haven't had it long so maybe there is something I have not noticed yet. I have another one from my totalled truck but would like to know what it goes to before plugging it in. I purchased this truck from a dealer as a fixer upper, the engine has a loud knock that sounds like a loose rod and I'am in the process of tradeing engines with my junk truck. Any help with the blue box thing would be great help.