What is this box next to my steering column?

[Pino2234]

On my 1985 F350 there is a box on the right side of the steering column. So far in my build for my dually I had to disconnect 2 wires from it.

I attached two images. What does this box do? Do we even need it?

The first wire that gave me a problem is the blue wire in the picture that is on the gray connector pigtail. It is the ground for the horn. I wasnt getting a constant horn. It would work sometimes with the key on and not others. So I spliced into that wire and grounded it and now my horn works like it supposed to.

The other wire I am pointing to is a green one in the same gray connector pigtail. This one goes to the brake lights. I put a flatbed on my dually and hooked up new LED tail lights. The tail lights picked up a 4 volts going to the left and right turn signal wires which lit up the LEDs very dim only when I turned the key on. I wont tell you how long it took me to trace where these 4 volts came from but I disconnected this wire too and everythings works just as good as before.

I dont understand why this box is even there. Its just been giving me problems. Anyone know what its for or if we even need it?

 

[Dieselcrawler]

Cruise control mod. my led's did same thing. i unhooked the module. but if you unhook it your horn wont work. lol

 

[riotwarrior]

Can you pull the box out take more pics and provide any #'s on it?

 

[typ4]

Thats funny because On my leds the 4 middle ones are just barely lit with key on, I dont mind , but been racking the melon trying to figure it out, kinda like daytime running lights, but know I know why.

THANKS

 

[Dieselcrawler]

yea i had same issue russ. so i statred unhooking things. when i unhooked that box, it went away. so i left it out. looked up the numbers and it is a cruise control module. i left mine out since i didnt need it. was in the crawler.

 

[Pino2234]

You guys dont have to unhook the box. There is a green 2 wire pig tail that loops back to itself. All it does it goes to the brake switch and lights and back to the Cruise Box like Corey called it.

Ill try to get pictures of it. But thats all I unplugged to get those "day running lights" off.

 

[CaptTom]

Cruise control mod. my led's did same thing. i unhooked the module. but if you unhook it your horn wont work. lol

Well you know why the horn is hooked to the cruise control don't you??

Cuz when you blast the horn to get that Cummins out of the way, it increases the speed.