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73-87 Chevy _ GMC Trucks => Interior & Equipment => Steering Columns => Topic started by: MY1978 on March 21, 2026, 06:49:10 am
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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. WTH!!! 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.
1978 Chevrolet, C10, 350,
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Either the horn relay control circuit is grounded, or the relay is faulty. Does the horn blow with the lock plate and the cancelling cam removed?
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Was late yesterday when I threw my hands up and said I am done. I am going to try that today. I have some other things to do around the yard, then will go back to that.
Thanks
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The resolution should be simple, and may be obvious once you direct your attention toward it in this new day. Once you remove the c-cam, pay particular attention to the copper brush that rides up against the cam. With the battery connected, depress the brush a few times using your finger to see what happens.