Non-stop horn honking

[My78truck]

So, I apparently need high caliber brains to fix this. I went to put the steering wheel back on, after trying to clock it, and I noticed that the steering wheel was on upside down, but because the wheels were turned slightly out. So I started the truck, straightened them all without incident except then the horn would not blow. So I pulled the steering wheel off, removed the locking plate and made sure the cancelling cam was seated correctly. Put everything back together and when I went to hook the battery back up, the horn blew. So AGAIN broke it down to the cancelling cam, AGAIN the horn blew. So I decided to try just putting the cancelling cam and locking plate back in place - and the horn blows. WTF!!! it wasn't doing that when I started it to straighten the wheels. Any thoughts or ideas. Prior to this the horn was fine. I was watching some videos and I will check the horn spring and fuse today. I also have all the parts ready to order in my cart from where I have ordered parts from.

 

[Goldie Driver]

I am a bit confused on this one. The locking plate only goes on one way, or should, as there is a master spline. The turn signal cam has a limited amount of play. A GM wheel of that era should not be upside down unless there is mechanical suspension damage.

Did you force it on by chance?

The second picture shows it - wider teeth.

 

[My78truck]

It was because the wheel was turned, not because anything was mechanically wrong or installed upside down. Now, I just need to figure out how to stop the horn from honking when I hook the battery back up.

 

[Goldie Driver]

Have any pictures of the install ? The horn is constant power but only works when the circuit is ground by the horn pad. With *only* the lock plate and cancelling cam installed I cannot mentally picture what could be causing that unless the turn signal switch went bad randomly or the relay went bad.

Weird.

 

[75gmck25]

The final assembly includes a 3 hole plastic piece (made of 3 nylon bushings, connected with plastic strips) that acts an insulator as you reassemble. Are you sure you have it in the right place, so as you put the plate down it does not ground out and activate the horn?

It is shown as part of item 9 in this LMC Truck diagram.

https://www.lmctruck.com/steering/steering-column-parts/cc-1973-87-steering-components