jdhpioneer Posted December 27, 2014 Share Posted December 27, 2014 So I'm trying to diagnose why my horn is not working. Can someone please tell me where the horn fuse and relay are. I have put a jumper directly from horn to power and it works. I have also pull horn button apart and cleaned a bit of rust off the contact point. I'm working on a 91 . Thanks Link to comment Share on other sites More sharing options...
Jeepman Posted December 27, 2014 Share Posted December 27, 2014 Relay is up under the dash... Should look something like this... Link to comment Share on other sites More sharing options...
jdhpioneer Posted December 27, 2014 Author Share Posted December 27, 2014 Driver side/passenger side? I don't hear any clicking from a relay when I press the horn button. Fuse location? Its not marked on either of my fuse boxes. Thanks for the picture Link to comment Share on other sites More sharing options...
Jeepman Posted December 27, 2014 Share Posted December 27, 2014 You will not hear a click if the relay is bad or doesn't have power... should be Driver side if my memory is correct... Link to comment Share on other sites More sharing options...
jdhpioneer Posted December 27, 2014 Author Share Posted December 27, 2014 You will not hear a click if the relay is bad or doesn't have power... should be Driver side if my memory is correct... Thanks. I've been under wheel for awhile and can't seem to locate. Any thought on where the fuse should be? Link to comment Share on other sites More sharing options...
relyt120 Posted December 27, 2014 Share Posted December 27, 2014 its near the fuse block off to the left Link to comment Share on other sites More sharing options...
jdhpioneer Posted December 27, 2014 Author Share Posted December 27, 2014 Hmm ill have to have a look and see. Link to comment Share on other sites More sharing options...
Jeepman Posted December 27, 2014 Share Posted December 27, 2014 was it working and then stopped or has it never worked? If never worked maybe the relay was removed which is why you can't see it otherwise it should be there... I don't have a picture of a Dash to look up... Link to comment Share on other sites More sharing options...
HOrnbrod Posted December 27, 2014 Share Posted December 27, 2014 The horn is fused in the drivers side footwell fuse box, fuse #11, 25A, marked HOLD/DLY on the 91 models. Link to comment Share on other sites More sharing options...
jdhpioneer Posted December 27, 2014 Author Share Posted December 27, 2014 I found the fuse HD LP FLY 25 amp. Fuse is good. Maybe I am missing the relay. Not seeing any unused connectors in that area though Link to comment Share on other sites More sharing options...
jdhpioneer Posted December 27, 2014 Author Share Posted December 27, 2014 Damn auto correct it says HD LP DLY Link to comment Share on other sites More sharing options...
jdhpioneer Posted December 27, 2014 Author Share Posted December 27, 2014 I bought the truck about 4 months ago. It has never worked. Never really bothered me. Got an inspection coming up and was hoping to fix it right. Link to comment Share on other sites More sharing options...
HOrnbrod Posted December 27, 2014 Share Posted December 27, 2014 That's the correct fuse. The following is straight from the 91 FSM: The horn relay is located on a bracket of 3 relays behind the instrument panel. I have never had a horn problem so have not searched for the horn relay. And there is no picture of it in the FSM. Advise you to stick your noggin under there and look up for a bracket with relays on it. :dunno: More brilliant engineering by Jeep.................. Link to comment Share on other sites More sharing options...
jdhpioneer Posted December 27, 2014 Author Share Posted December 27, 2014 Thanks. I'm gonna stick my head up in there again tomorrow. I've got a pretty comfy way figured out that involves my leg being hung over the door. Link to comment Share on other sites More sharing options...
ScottJeep Posted December 28, 2014 Share Posted December 28, 2014 best the internet has to offer.... sorry too lazy to drag myself outside and around the house. Link to comment Share on other sites More sharing options...
gogmorgo Posted December 28, 2014 Share Posted December 28, 2014 The horn relay on my '91 was dangling loose under my dash when I got it. It looks like it might once have been velcroed to the lower dash panel, but it was also on a bracket with another relay, so I'm not positive... it may simply have been unbolted and never bolted back in. So yeah, two relays together under the driver's side of the dash. Mine was black, not white. Also, even though my relay was bad, that wasn't the entire reason my horn wasn't working. The horn button stuff under the steering wheel lock plate in the steering column has a couple different styles, and they come with different length lock plate springs. Someone had obviously pulled my column apart at some point and put the wrong spring back in. When they couldn't put the lock plate back on, their solution was to pull out the horn cam... yes it "fixed" the problem, but it also removed a part critical to the horn working... idiots. :shake: Obviously the chances of that being your problem are slim, so make sure your relay is working before you start pulling apart your column. But here's a link to my thread from when I was trying to get my horn to work: http://comancheclub.com/topic/40798-horn-button-missing-bits-and-pieces-i-think/ Link to comment Share on other sites More sharing options...
fiatslug87 Posted December 28, 2014 Share Posted December 28, 2014 Make sure the horn is bolted down tight. When I added the second horn it would not work until I tightened it down really well. The FSM also says to use the correct type of screw. Link to comment Share on other sites More sharing options...
gogmorgo Posted December 28, 2014 Share Posted December 28, 2014 Yup, the horn grounds through the mount, although the OP said his horn works when he jumps it from the battery... Link to comment Share on other sites More sharing options...
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