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Discussion Topic:
6 volt horns
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1939ute |
11-28-2010 @ 7:23 PM
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Member
Posts: 80
Joined: Apr 2010
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Hello Tom, I have finally got the horns working using two aftermarket relays, one to each horn! I would say the old relay that I found in the shed is faulty and using one aftermarket relay on two horns wasn't delivering enough power! As you had already said! Thanks to all the members who have assisted me to deal with the problem. Tom, I have sent you a private message regarding the relay you have! Cheers, John
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TomO |
11-28-2010 @ 9:37 AM
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Senior
Posts: 7250
Joined: Oct 2009
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Here is a photo showing the horn terminals.
Tom
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TomO |
11-28-2010 @ 9:36 AM
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Senior
Posts: 7250
Joined: Oct 2009
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I still think that you either have a defective relay or the contacts cannot deliver enough current to make your horns work. I have attached a photo of the correct style relay for your car. The short hook is for the wiring harness and the long leg is for mounting the relay to the frame. If you cannot find one locally, send me a private message and I will sell you the one pictured. Tom
This message was edited by TomO on 11-28-10 @ 9:44 AM
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1939ute |
11-27-2010 @ 11:55 PM
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Member
Posts: 80
Joined: Apr 2010
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Hello trjford8, thanks for the info, I will recheck the ground and give it another go! Cheers, John
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trjford8 |
11-27-2010 @ 5:27 PM
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Senior
Posts: 4214
Joined: Oct 2009
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John, make sure the relay is properly gounded. Anything electrical needs a good clean ground.
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1939ute |
11-27-2010 @ 4:13 PM
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Member
Posts: 80
Joined: Apr 2010
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Hello Tom, thanks for that; I have an old relay that's branded RVB and it has three terminals! One terminal has 'H' on it, the other has a dot on it and the third is unmarked, I connected it 'H' terminal to horns, 'Dot' terminal to battery and unmarked terminal to button/ground. When I connected the ground wire, the contacts closed and the horns made a little sound and then stopped! I did try wiring one horn at a time with the same result! I had cleaned the relay points prior to doing the test! I can get each horn to blow if run wires directly from the battery!! Silly question! What if I try wiring two relays to give it extra power to the horns?? Cheers, John
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TomO |
11-27-2010 @ 9:00 AM
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Senior
Posts: 7250
Joined: Oct 2009
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The relay from Mac probably cannot carry the full current required for your horns. The original relays had heavy duty contacts. If you have an original relay, you can try removing the cover and cleaning the contacts. The original type relay has four wiring terminals, top 2 are for the horns, next is the battery terminal and the bottom terminal is for the horn button. The battery and horn button wires are soldered to the terminals to improve current flow, but the horns will work without soldering them.
Tom
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1939ute |
11-26-2010 @ 2:37 AM
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Member
Posts: 80
Joined: Apr 2010
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Thanks Stroker, that makes sense; my horns work when I bypass the relay but I only got a click from the relay and only a slight noise from the horns when connected through the relay! I have tried two relays (one being a new one from Mac's that did work and one old one I had in the shed)! I'm a bit lost yet but I'll keep working at it!! Thanks again for your help. Cheers, John
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Stroker |
11-26-2010 @ 2:25 AM
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Senior
Posts: 1460
Joined: Oct 2009
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39 UTE: The horn relay, much like your starter solenoid, is simply a way of switching a high amp load using a small switch such as the starter button, or in this case the horn button. The relay is operated by your horn button, and when you push the button, it closes a set of large contacts in the relay which actually carries the current to the horn "motors". This saves having to have two big wires running to your horn button.
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1939ute |
11-25-2010 @ 9:27 PM
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Member
Posts: 80
Joined: Apr 2010
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Hello Tom, I have done the test on another set of horns I have and I could get them both to work (one louder than the other) with just wires from the battery! When I tried them with the relay (old one I had) they wouldn't work! I wired them up through the relay on my Ute and the wouldn't work! The relay on the Ute is one from Mac's. I don't know what the function of the relay is so I couldn't fiddle too much! I will look through my bits and see if I can find any other relays to give them a go! It would be good to know what the relay actually does!! Can you tell me? Once again, thanks for your help! Cheers, John
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