The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Horn contact pin/spring/plastic thingy order?

**landy** · 08-13-2012, 11:04 PM

Ah, yes. You are having the same problem I had/have. The LMC kit doesn't work directly without some modifications. Also, the parts diagram in the LMC catalog is incorrect. The white plastic ring you refer to is the cancelling cam and the pin that goes into it needs to be modified. Dremel down the diameter of the pin so it fits into the cylinder on the cancelling cam. The spring goes in first. The fiber barrel thingy doesn't work directly on the LMC-supplied cam. I sanded down the protrustions on the barrel thing and JB Welded it into the cylinder. It worked fine.

Regarding the rest of it, I've still not been able to get the horn to work correctly. I think that may be due to using a second gen steering wheel until I can find a decent first gen steering wheel. I think the width is different so it's causing the horn to ground out.

You may also want to post in the 67-72 truck section as you may get more responses than on the Blazer-specific one. The horn system is the same.

I've attached a link to one of my posts and the responses I received. It also has some good pics.

http://67-72chevytrucks.com/vboard/s...d.php?t=515103

Keep posting on the progress.

08-13-2012, 11:04 PM	#2
landy Senior Member Join Date: Jun 2000 Location: alb, nm Posts: 413	Re: Horn contact pin/spring/plastic thingy order? Ah, yes. You are having the same problem I had/have. The LMC kit doesn't work directly without some modifications. Also, the parts diagram in the LMC catalog is incorrect. The white plastic ring you refer to is the cancelling cam and the pin that goes into it needs to be modified. Dremel down the diameter of the pin so it fits into the cylinder on the cancelling cam. The spring goes in first. The fiber barrel thingy doesn't work directly on the LMC-supplied cam. I sanded down the protrustions on the barrel thing and JB Welded it into the cylinder. It worked fine. Regarding the rest of it, I've still not been able to get the horn to work correctly. I think that may be due to using a second gen steering wheel until I can find a decent first gen steering wheel. I think the width is different so it's causing the horn to ground out. You may also want to post in the 67-72 truck section as you may get more responses than on the Blazer-specific one. The horn system is the same. I've attached a link to one of my posts and the responses I received. It also has some good pics. http://67-72chevytrucks.com/vboard/s...d.php?t=515103 Keep posting on the progress.