Author Topic: 1990 Rocky horn stopped working  (Read 1929 times)

0 Members and 1 Guest are viewing this topic.

tbenton

  • Guest
1990 Rocky horn stopped working
« on: February 26, 2016, 07:39:29 AM »
When I press the horn I hear a subtle clicking sound under the steering wheel.  Replaced horn fuse but that is not the problem. The old fuse was ok but replaced anyway.  I have a paper copy of the service manual and use it a lot but have not looked  for the darn horn/relay yet . I searched each section in the WARFS on line manual that I downloaded  and horn and or horn relay gave me no results... :017: Have to have the horn working to pass safety inspection here in Virginia so looking for help

Can't recall the last time I had to use the horn but got cut off in dangerous snow and ice situation recently and really wanted to BLAST that driver. :violent-smiley-007:

A friend of mine on these forums suggested I contact  Leon so I emailed him a few days ago but so far no response so here I am!

Thanks so much

Terri

NOTE: I modified this post
« Last Edit: February 29, 2016, 09:18:10 AM by Terri »

Offline Gonzo_Descente

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 327
  • Karma: +7/-0
Re: 1992 Rocky horn stopped working
« Reply #1 on: February 26, 2016, 10:24:02 PM »
I suggest you upgrade to a Stebel Nautilus horn, which sounds as 140 dB.  I have one in my motorcycle and it does wonders to the cagers who are oblivious to their surroundings. Cell phone/texters can kill you.  Don't be dead right.

DW also appreciates the one I installed in her cage.

They run about $30 USD and are available on motorcycle sites and also eBay.  Pick the one that includes the relay. Use at least AWG 12 stranded wire and an in-line fuse for 15 Amps.

I  wire mine so that the wire to the original horn still goes there, but is teed off for the relay so the OEM horn and the Stebel horn sound together.

If you want to only replace the relay I'm sure it can be done and the part is simple and cheap.

Offline SouthernGuild

  • Full Member
  • ***
  • Posts: 122
  • Karma: +3/-0
  • Gender: Male
Re: 1992 Rocky horn stopped working
« Reply #2 on: February 26, 2016, 11:17:42 PM »
 :coffee2: Great advice and idea Gonzo. I'm looking into this one myself.
John,      Location: New South Wales, AUSTRALIA
Vehicle:  1986 F-87 Rocky.....What a great old ute!
http://www.wildlife-rescue.org.au/

tbenton

  • Guest
Re: 1992 Rocky horn stopped working
« Reply #3 on: February 29, 2016, 05:31:55 AM »
Thanks Gonzo but for now we would rather repair the existing horn. If we can't repair easily new horn sounds like a plan.

I hope the relay is easy to replace and that we can find one that fits it here in the states at an auto parts store. I heard that many parts can be replaced with Toyota parts. I just need to find where the relay is. There is a relay under the dash next to the fuse box but not sure thats the one????



Still trying to find where in the service manual the horn function/relay is mentioned.

Terri
« Last Edit: February 29, 2016, 05:37:53 AM by Terri »

Offline Gian

  • Jr. Member
  • **
  • Posts: 50
  • Karma: +0/-0
Re: 1992 Rocky horn stopped working
« Reply #4 on: February 29, 2016, 06:55:07 AM »
Harnes and wires section in the manual page 15(cowl wire). The relay is located between the sub fuse box and the instrumental pannel. To access follow the instructios in the body section munual.  I suggest to test your horns trumpet  first.the relay under the main fuse box is the heater relay, if you unplug it the heater wont turn on.
Cheers


Offline Gonzo_Descente

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 327
  • Karma: +7/-0
Re: 1992 Rocky horn stopped working
« Reply #5 on: February 29, 2016, 08:53:08 AM »
If you look at the service manual right here on this site, the Body Electrical section, Page BE-34, there is a diagram of the location of the horn relay and instructions for removal which involves removing a lower panel below the steering column.

tbenton

  • Guest
Re: 1992 Rocky horn stopped working
« Reply #6 on: February 29, 2016, 09:09:32 AM »
 :13: Gonzo....Thanks so very  much. The only part of the manual I had not downloaded to my computer was the BE section...DUH on me! I had not gotten to the point of dragging out my paper copy of the manual that I bought on Ebay years ago. My husband said it surely was in the electrical section but I just had not gotten the book out yet. I research locate and purchase and he fixes....ha ha ha.  It my Rocky but his truck has been sick so he has been driving it to work and love it...grrrr....... I want it back!

Do you think the fact that there is a clicking sound when the horn is pressed means its the relay? Never had a horn go bad before in any vehicle.

Also do you think I can find a relay at Auto Zone or Advance auto that will fit it or am I going to have to go on search mission to find one on line?
« Last Edit: February 29, 2016, 09:16:30 AM by Terri »

tbenton

  • Guest
Re: 1990 Rocky horn stopped working
« Reply #7 on: February 29, 2016, 09:19:10 AM »
Allow me to apologize for calling my Rocky a 1992....I KNOW better...its a 1990

Offline Gonzo_Descente

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 327
  • Karma: +7/-0
Re: 1990 Rocky horn stopped working
« Reply #8 on: February 29, 2016, 10:27:51 AM »
I have not seen the actual relay, but if I could not find a direct replacement I would do the following:

Remove the bad relay and test it.  If bad, I would take the innards out of the relay and glue in a replacement mechanism and wire it to the base.  It would be ugly but it would work.

I regularly buy relays at our local swap meet for about $2 USD each.  At the parts store they run about $15.

The clicking sound might be the relay actuating or just the horn switch.  Make yourself a 'mechanic's stethescope' out of a scrap piece of tubing and you should be able to locate the sound.

tbenton

  • Guest
Re: 1990 Rocky horn stopped working
« Reply #9 on: February 29, 2016, 11:07:42 AM »
I have not seen the actual relay, but if I could not find a direct replacement I would do the following:

Remove the bad relay and test it.  If bad, I would take the innards out of the relay and glue in a replacement mechanism and wire it to the base.  It would be ugly but it would work.

I regularly buy relays at our local swap meet for about $2 USD each.  At the parts store they run about $15.

The clicking sound might be the relay actuating or just the horn switch.  Make yourself a 'mechanic's stethescope' out of a scrap piece of tubing and you should be able to locate the sound.
=

Thats a great idea about the stethoscope!  You mentioned a horn switch....oh lord...another wrinkle......hmmmm
My hubby replaced the head light assemblies a few months back..WONDER if its possible he accidentally disconnected the horn since it lives  behind the grille.....worth a peek.
« Last Edit: February 29, 2016, 11:48:00 AM by Terri »

Offline Gonzo_Descente

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 327
  • Karma: +7/-0
Re: 1990 Rocky horn stopped working
« Reply #10 on: February 29, 2016, 07:22:30 PM »
Glad I can help.  I've been troubleshooting electronic (and some electrical) systems since 1960.  I have learned a couple of things.

The basic troubleshooting technique is quite simple.  Divide and conquer.  Pick a spot in the middle of the problem area and move toward the problem cause, again sometimes dividing the area in half each time.

Here is a list of items this should be:

Bad horn
Bad connection
Bad wire
Bad horn switch
Bad relay
Open circuit caused accidentaly as you mentioned.

Do you have a multimeter and do you know how to use it?  In not even that, a 12 Volt light bulb and a couple wires can be quite useful --- is there voltage at that particular point or not?  Proceed from there.

Don't forget there has to be a ground (return wire) for the circuit to work.

tbenton

  • Guest
Re: 1990 Rocky horn stopped working
« Reply #11 on: March 01, 2016, 05:37:41 AM »
Glad I can help.  I've been troubleshooting electronic (and some electrical) systems since 1960.  I have learned a couple of things.

The basic troubleshooting technique is quite simple.  Divide and conquer.  Pick a spot in the middle of the problem area and move toward the problem cause, again sometimes dividing the area in half each time.

Here is a list of items this should be:

Bad horn
Bad connection
Bad wire
Bad horn switch
Bad relay
Open circuit caused accidentaly as you mentioned.

Do you have a multimeter and do you know how to use it?  In not even that, a 12 Volt light bulb and a couple wires can be quite useful --- is there voltage at that particular point or not?  Proceed from there.

Don't forget there has to be a ground (return wire) for the circuit to work.


Gonzo- Electrical/electronic issues are the most difficult to diagnose in my opinion. If someone takes their vehicle to a garage/dealer and are told its an electrical problem it puts fear in your heart and  you might as well sign over your house to them. With labor rates as high as they are a simple problem could take a long time. I realize they can diagnose with computers BUT with older/classics its not that simple. We owners have to take the bull by the horn and learn to diagnose . We pulled codes off the Rocky manually last year. Not that simple placing the 'paperclip' into the tiny holes carefully but it worked. WARFS member lioncub has a great video on You Tube!  We own 3 vehicles that are 'classic'. The Rocky, a 1988 Mazda RX7 convert and a workhorse 1992 Ford F150. Rocky and Rx7 mileage is not that high but the Ford is working on a world's record. OBVIOUSLY we do not take anything to a dealer. We do all we can and if need be we have a great private mechanic. My RX is rotary of course which is a bit tricky for most mechanics but so far so good. I have had  4 of them and love them!

And yes we have a good multimeter and have used it many times.

NOW for the good news. Hubby took grille off and 'giggled' things  and guess what ? Horn works.  Fingers crossed.

I love WARFS and you guys are always willing to help and You Tube offers some great how to videos

Thanks again and til next time...!!  :039:

Terri
« Last Edit: March 01, 2016, 05:40:40 AM by Terri »