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Topic: New horn issue!!

in Forum: C3 Electrical


New horn issue!!

Posted: 7/24/05 8:01pm Message 1 of 10
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Scott, LA - USA
Joined: 2/26/2004
Posts: 303
Vette(s): 77 L82 coupe
Well Got everything back together (Ill update the website soon) and my new blinkers work THANX EVERYONE!
Anywho the horn is still dead HOWEVER I had the horn button (the thing held on by 3 screws on the steering wheel) off and was taking the relay off when it went beep. Im thinking a short but.. the relay was REALLY hot! and when I was checking the wires everything checked good. Any ideas.
Glenn
calliesworld.com








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New horn issue!!

Posted: 7/25/05 6:07am Message 2 of 10
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SOUTHWICK, MA - USA
Joined: 6/26/2003
Posts: 336
Vette(s): 1975, L-48 coupe, 4-speed, light mods

Glenn,

There are several things to check with the horn. I suggest that you start with the easy stuff first. Check the relay, then move on to the wires that are easy to get to. Check the resistance on the horn wire (green) from the horns and up to the column. Also check the ground on the horns (common issue).

From there if everything still looks good, you might need one of those horn rebuild kits. If you still are having problems send me an e-mail. I've been through the assembly of the horn system at least 3 times, and I'm happy to say that I finally fixed my problem.

Glenn




Glenn's Bright Blue 75 T-Top
L48, 4 Speed, Dual Exhaust

New horn issue!!

Posted: 7/26/05 7:06pm Message 3 of 10
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HARROD, OH - USA
Joined: 7/25/2003
Posts: 335
Vette(s): 1976 - L-48 Auto, A/C, AM/FM, Power Windows, Tilt Telescopic Wheel, Factory Aluminum Wheels, Inferno Red Matalic Custom paint with Black Leather Interior.
My problem when I had a hot relay was that the spring in the upper horn contact was so weak that it was making contact all the time and eventually instead of blowing the horn it just over-heated the relay. Once I changed the relay and moved the horn contact away from the contact point and replaced the spring and contact it was good again. Knock On Wood.


New horn issue!!

Posted: 7/26/05 11:30pm Message 4 of 10
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Scott, LA - USA
Joined: 2/26/2004
Posts: 303
Vette(s): 77 L82 coupe

That sounds alot like what Ive got!!! So you replaced the spring in the relay? and just opened up the contacts in the relay?

Glenn









New horn issue!!

Posted: 7/27/05 6:53pm Message 5 of 10
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HARROD, OH - USA
Joined: 7/25/2003
Posts: 335
Vette(s): 1976 - L-48 Auto, A/C, AM/FM, Power Windows, Tilt Telescopic Wheel, Factory Aluminum Wheels, Inferno Red Matalic Custom paint with Black Leather Interior.
Actually I change the relay out completely and then replaced the spring in the Upper Horn contact under the horn button on the stirring colum. I found that the contact point was very touchy and if you have the spring to loose then it wont make contact when you want it to and if it is to strong it makes contact all the time or when you don't mean for it to. The upper contact comes in a small kit that includes two different size contact pins and a couple of springs. Getting it all set just right and the screws back in before the hole works falls in your lap was the fun part.


New horn issue!!

Posted: 9/20/05 7:09am Message 6 of 10
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Scott, LA - USA
Joined: 2/26/2004
Posts: 303
Vette(s): 77 L82 coupe
I need to find a tool that I can get at the turn signal switch and stuff in the column. I saw a post for it a while back, I think Ken said you can rent em from autozone (Dont have em here in Japan). So I need some info on what it is and where I can get it. Any ideas?
Thanx
Glenn








New horn issue!!

Posted: 9/20/05 7:54am Message 7 of 10
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SOUTHWICK, MA - USA
Joined: 6/26/2003
Posts: 336
Vette(s): 1975, L-48 coupe, 4-speed, light mods

Glenn,

What I did was use a generic steering wheel puller tool to get started, then I used normal hand tools to get down in there.

Which part of the removal are you talking about?

Glenn




Glenn's Bright Blue 75 T-Top
L48, 4 Speed, Dual Exhaust

New horn issue!!

Posted: 9/20/05 8:32am Message 8 of 10
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Scott, LA - USA
Joined: 2/26/2004
Posts: 303
Vette(s): 77 L82 coupe
I need to get to the turn signal switch (basically dig deeper than I have) Its the plate that has a bunch of detents in it.
Glenn








New horn issue!!

Posted: 9/20/05 8:46am Message 9 of 10
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SOUTHWICK, MA - USA
Joined: 6/26/2003
Posts: 336
Vette(s): 1975, L-48 coupe, 4-speed, light mods

If you push the "c" clip off the post, while applying pressure to the plate, it will come right off.

The hard part is putting it back on after your done. I found that if I had a buddy push the plate back in (it's spring loaded) and I took a small curved needle nose plier, I could fit it in the grove for the clip, and apply pressure to the plate at the same time. This allowed my buddy to get the clip started. This took many tries and curses.

Glenn




Glenn's Bright Blue 75 T-Top
L48, 4 Speed, Dual Exhaust

New horn issue!!

Posted: 9/20/05 6:49pm Message 10 of 10
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

You can buy the tool on line at AutoZone.com.  It's in the rental tools, but you can purchase one.  They can ship it to you.   It's easier than having a helper pushing down the lock plate.(the correct name)   The tool is a lock plate tool.

If you have a tilt wheel it's a bit tricker.  The odd head bolt that the locking ring attaches to needs to be removed.  Then push the shaft all the way in.  Get a bolt that matches the locking bolt you removed, and cut the head off.  Grind a slot in the cut bolt top so a screw driver can be used.  Insert the newly made tool in the lock bolt hole, and tighten it down with the screwdriver.  This will hold the steering shaft and stop it from extending so the lock plate tool can be used.

Keep in mind, the horn relay has power all of the time on one wire into the relay.   A second wire goes to the horn itself.  The third wire goes to the horn button assy via the column.  This wire works on a ground principal.  SO a short would make the horn sound all of the time.  An open will prevent it from operating at all.

 

kstyer38615.7859143519


in Forum: C3 Electrical


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