SPOILER ALERT: skip to the end of the thread and avoid all my dumb questions and just want to read about how the horn actually works by CLICKING HERE.
Now that I have my turn signals working & while I still have my steering wheel all torn apart, it seems like a good time to get the horn working as it should. I guess my first step is to understand just how the horn mechanism works, and I can't find anything that really explains it.
I have this piece (which Jeephammer calls this the "horn ring" in this writeup) but it seems to double (?) as the turn signal cancel cam. Obviously mine is broken.
Now it seems like that copper ring probably needs to make contact with the spring-loaded cooper "pin" at 2 o'clock. It seems like the copper ring is supposed to be completing a circuit, but I don't see how it works.
And then there is this which is (a) really rusty and (b) is known as the "horn spring plate" on Napa's site.
TL;DR -- what action inside the steering column makes horn go beep?
Simple stuff first, does the horn(s) work if you apply 12 volts positive directly to the horn? Is the horn grounded good? It looks like you don't have all the correct parts. Like these? Attachment 2421154 The red plastic piece is a insulator, the black metal flat piece Acts as a spring,when the horn button is pushed the silver metal cupped part that touches the spring, this allows contact with the brass ring. The ground is then sent to the relay under the dash, and the horn beeps. A least that's how I remember it,
The steering wheel horn button fits in the silver cup.
1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1980 CJ5 trail Jeep.
1989 YJ the CJ to YJ.
Did you check the horn relay hbar? This is what was wrong with mine early on, it's hidden in the rat's nest of wiring between the parking brake and the column
Is that Summit kit for the GM colums lucdog?
The parts shop that stocks part for Skylab II will not have parts for our year/model of Jeep
We cannot accurately judge the trajectory of a speeding critter (cat, dog, sasquatch)
Record heat waves and floods only occur when we visit that area
Ah yes, I have all that too, and it's all rusty as all get out. I didn't realize it was all horn-critical, but your description makes sense. No, I have not tested the horn yet (need to find my booster cables [or just run two long test wires]). The PO added an aftermarket horn button on the dash panel (which also doesn't work), but it seems like if I'm going to fix it this is a PRIME opportunity to fix it back to factory working condition. I haven't found the horn relay yet, either, but I wouldn't say I've looked REALLY hard yet. It would be an easier trace if they weren't all painted black under there. This entire Jeep is like a Rolling Stones song.
Did you check the horn relay hbar? This is what was wrong with mine early on, it's hidden in the rat's nest of wiring between the parking brake and the column Is that Summit kit for the GM colums lucdog?
Ok, since it took some inside knowledge to turn up that K137 horn kit (seriously, how does Morris not carry this??), can anyone help me source the horn relay for a 79 CJ7? I can turn up some results, but they vary widely across all the usual places, so I'm struggling to choose the correct one. Hopefully somebody here can chime in with their exact part #.
Also, what is with the turn signal cancel cam being tilt wheel-specific? The pictures make them look pretty identical, and it seems like Napa is the only place where I can find the non-tilt version.
I have that K137 horn kit coming in the next day or so, but in the meanwhile I guess I'm still struggling with how this works, and it might be that what I currently have is just tooooo broken. You can see my new (green) cancel cam with the shaft that goes through the hole in the steering wheel. I get that the cup pushes down onto the spring plate (pictured is my old rusty one).....but I'm trying to figure out how THAT action fires the horn. Does something go inside that shaft? Maybe this will be more obvious once that kit arrives...
You need to get a Horn Contact Pin Kit #2612000010. The pin goes into the Green Tube and lock in. Depending on if you have an aftermarket steering wheel or Stock. You may need the wire pin instead. Look at this Video http://www.youtube.com/watch?v=iaBQ9unjbbg
I am going through the same problem now.
Thanks that makes more sense. It appears that stuff is included in the K137 horn kit, so I should be good to go once that stuff arrives.
While I'm waiting on parts, maybe it's time to share a Billy Bob story related to my horn. He added an aftermarket horn button on the dash, but that also didn't work when I acquired it. It had two wires- 1 directly to the horn, and 1 that didn't go anywhere. Yeah, no relay in the circuit, no 12V to the horn, no actual circuit at all. The wire that went to the horn was a wire he added, so somehow he managed to not cut into the harness to perform his "fix." The 12/14 ga wire to the horn is still intact. So it's very likely that the horn initially stopped working because of the condition of the parts I initially posted and I won't need to touch the harness to fix it!
Then in looking for the relay I found a huge hornets nest way up behind the dash. Of course as I'm typing this on my phone in a meeting I realize that the pictures are on my iPad. So you'll have to just trust me that it was pretty big. (TWSS)
The reason it is a GM part kit is because Jeeps use Saginaw columns and parts the same ones that GM uses. That bit of information will help you find parts in the parts store often times in the self help section. You can ask about Jeep column parts and the clerks will look at you like a cow looking at a new gate. Saginaw is owned by GMC or used to be.