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Unread 02-02-2009, 08:08 AM   #1
Jay_NH92
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Horn relay in 92 yj

I've looked under the dash in and around the fuse box. Where is it??

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Unread 02-02-2009, 09:00 AM   #2
Greg Phillips
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in the power distribution box...black rectangular box mounted in front of the battery...schematic should be printed inside cover to the box
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Unread 02-02-2009, 09:09 AM   #3
Jay_NH92
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When i got the jeep, it didnt come with a cover on the box. I got one off of ebay and there is no mention of the horn relay
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Unread 02-02-2009, 09:15 AM   #4
RJW95
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if you are looking at the jeep from the front towards the rear im pretty sure that it is the relay in the back left corner of the box
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Unread 02-02-2009, 09:23 AM   #5
Greg Phillips
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k...if it's oriented like mine ( standing by front wheel passenger side, facing driver side...narrow side of box being left to right) the topmost relay counting down goes...Horn, Fuel Pump, ABS Pump,AC, AutoShutdown,Starter, ABS SYS.Pwr.
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Unread 02-02-2009, 10:24 AM   #6
Jay_NH92
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I have the part to replace it and nothing matches up with whats inside the distribution box. Is it suppose to be 3 prongs??
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Unread 02-02-2009, 10:40 AM   #7
bigsquat
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here is a pic of whats what. all the relays are the same , so see if what you have matches the one you bought. i would think it would be a 4 pole , 2 poles for the relay coil and two for the dry contact , but i dont remember.
starter_motor_relay.gifa.jpg  
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Unread 02-02-2009, 10:49 AM   #8
Jay_NH92
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Looks like I'm going back to the advance auto parts. Thanks for the visual
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Unread 02-02-2009, 11:59 AM   #9
Jay_NH92
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I put the new horn relay. Tested it when the jeep was off. it worked. When i turned the jeep on it stopped working.
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Unread 02-02-2009, 01:26 PM   #10
bigsquat
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mine was acting wierd and so was some of my other relays. the problem wasnt the relays ,it was corrosion where the little blades go into the sockets. i put some conductive grease on the blades and pushed the relays in and out a few times and its now working fine. and the relays have 5 blades,In went and looked.
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Unread 02-02-2009, 02:47 PM   #11
Alfons
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See if the relay is getting power when you have the jeep running. You'll need a multi-meter (or at least a circuit test light) and the following diagram - the pin numbers are on the bottom of the relay. First, set the multi-meter to OHMS, then remove the horn relay. Now, connect one probe to ground (negative battery terminal will be OK) and stick the other into the pin 85 or 86 slot and see which one causes the meter to show 0 (zero) ohms - this will be the pin that goes to ground. Now, change the multi-meter selection to DC Volts in a range that will include 12 (it'll probably be 20 VDC), and do the following:
  • Start the jeep
  • Stick the black (negative) probe into the slot that indicated it went to ground
  • Stick the red (positive) probe into the other slot (85 or 86)
  • Have someone press the horn button
  • You should read 12 volts if there's power coming to the relay with the jeep running.

If you use the circuit test lamp, do the following - this one is easier since you don't need to find the polarity of each pin on the low amp side of the relay:
  • Start the jeep
  • Stick one lead into the pin 85 slot
  • Stick the other into pin 86 slot
  • Have someone press the horn button
  • The light should come on if there's power.

Here's the pic of a typical auto relay:

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Unread 02-02-2009, 03:24 PM   #12
Jay_NH92
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I have to wait to mess around with it some more on wednesday or thursday. Once in a while I also do get the horn to work when its on. Its a mystery
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Unread 06-16-2010, 09:43 PM   #13
juangolf
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too much physics..had enough already
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Unread 06-16-2010, 10:51 PM   #14
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Quote:
Originally Posted by juangolf View Post
too much physics..had enough already
well it took you a year and a half to have enuff?
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Unread 01-22-2011, 12:13 PM   #15
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