Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts  See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
How to make a horn relay for '82 diesel?
Forum Index -> Vanagon Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
Zephyr_shreds
Samba Member


Joined: July 15, 2019
Posts: 95
Location: Bakersfield
Zephyr_shreds is offline 

PostPosted: Wed Nov 20, 2019 2:19 pm    Post subject: How to make a horn relay for '82 diesel? Reply with quote

Can someone tell me how to make a horn relay from scratch please.
Including all the dif awg wires.
Pictures would be cool too.

Iím powering my radiator fan from a fuse box, for all the other wiring involved in the fan speed, then the fuse box attaches to the battery with 8wgwire. Can I tap into the fuse box that Iím using for the radiator to power the horn?

Please help!Smile super duper appreciative if you can.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
0to60in6min
Samba Member


Joined: November 27, 2006
Posts: 3025
Location: OR & CA (Oregon/California)
0to60in6min is offline 

PostPosted: Wed Nov 20, 2019 2:27 pm    Post subject: Re: How to make a horn relay for '82 diesel? Reply with quote

errr... you want the horn going off when the radiator kicks in...? Very Happy

how much time do you have on your hands to make a relay from scratch?

https://www.amazon.com/Absolute-Holder-RLS125-Automotive-SRS105/dp/B00C0SATHE?ref_=fsclp_pl_dp_3
Back to top
View user's profile Send private message Gallery Classifieds Feedback
djkeev Premium Member
Samba Moderator


Joined: September 30, 2007
Posts: 25076
Location: North West New Jersey
djkeev is offline 

PostPosted: Wed Nov 20, 2019 2:37 pm    Post subject: Re: How to make a horn relay 1982 vanagon Reply with quote

By design, you should have +12 volts at the horn whenever the key is on.

Do You have 12v there?

Also by design, when you push the horn button you are making a ground path for the 12 volts already at the horn.

Sadly, this ground path is often weak due to the design of the path traveled.

Do you have a good ground at the horn when the button is pushed?

If you answered "Yes" to having 12 v but "No" to having a good ground, this is probably why your horn doesn't work.

Test it, take a piece of wire and with the key on, touch the wire to a good ground (spare tire clamshell bolt?) and the ground terminal on the horn, brown wire I believe.
Does the horn honk?
Yes? You need a good ground.
No? You need to check your horn to see if it actually works.

Good news!
You can easily wire in a relay to work the horn using the stock wiring and horn button!

A good ground isn't needed to operate a low draw relay while a good ground is required to honk a horn!

Ideas to wire in a relay......

https://www.thesamba.com/vw/forum/viewtopic.php?t=472190

I went super simple and added the relay at the horn using the stock +12v and ground wires.

Dave
_________________
Stop Dead Photo Links how to post photos

Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473

Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537

Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Zephyr_shreds
Samba Member


Joined: July 15, 2019
Posts: 95
Location: Bakersfield
Zephyr_shreds is offline 

PostPosted: Thu Nov 21, 2019 2:49 pm    Post subject: Re: How to make a horn relay for '82 diesel? Reply with quote

Thankyou so much sorry Iím late been kind of busy. This makes lots of sense Thankyou
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 43476

Wildthings is online now 

PostPosted: Thu Nov 21, 2019 3:38 pm    Post subject: Re: How to make a horn relay for '82 diesel? Reply with quote

Google "horn relay wiring" and you will be shown lots of schematics on how to do it. You can buy a horn relay for most any rig from your FLAPS or use a single pole double throw relay.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Vanagon All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2020, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB