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#1380100 10/09/2020 2:22 PM
Joined: Dec 2005
Posts: 50
5
Wrench Fetcher
Wrench Fetcher
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Joined: Dec 2005
Posts: 50
Going to install a horn relay in my 51. Its marked with the following numbers: 30, 85, 86, 87. Whats the proper makeup for this relay?


1951 Chevy 3100 5-window
261 cu in, 348 Head, Split Fenton Exhaust
Offy with Dual Weber 2 Bbl Carbs
51bowtie #1380102 10/09/2020 2:27 PM
Joined: Dec 2005
Posts: 50
5
Wrench Fetcher
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Posts: 50
By the way, they are aftermarket modern horns.


1951 Chevy 3100 5-window
261 cu in, 348 Head, Split Fenton Exhaust
Offy with Dual Weber 2 Bbl Carbs
51bowtie #1380104 10/09/2020 2:35 PM
Joined: Sep 2001
Posts: 29,269
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
Posts: 29,269
What brand & model-number horn?

What brand & model-number relay?

And/or post/attach photos of both.

tclederman #1380111 10/09/2020 2:57 PM
Joined: Dec 2005
Posts: 50
5
Wrench Fetcher
Wrench Fetcher
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Joined: Dec 2005
Posts: 50
Both are Hella Products. The relay is model 960 388-46. 12v
Attachments
51Horns.png (52.68 KB, 116 downloads)


1951 Chevy 3100 5-window
261 cu in, 348 Head, Split Fenton Exhaust
Offy with Dual Weber 2 Bbl Carbs
51bowtie #1380112 10/09/2020 3:04 PM
Joined: Dec 2002
Posts: 3,438
Moderator - The Electrical Bay
Moderator - The Electrical Bay
Joined: Dec 2002
Posts: 3,438
Here is a typical installation absconded from the googler.
Attachments
horn relay schematic.gif (6.8 KB, 117 downloads)

Last edited by Rusty Rod; 10/09/2020 3:05 PM.

Another quality post.
Real Trucks Rattle
HELP! The Paranoids are after me!
Rusty Rod #1380114 10/09/2020 3:13 PM
Joined: Dec 2005
Posts: 50
5
Wrench Fetcher
Wrench Fetcher
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Joined: Dec 2005
Posts: 50
Looks like what I need but....the relationship between the 85 terminal and the 30 terminal. Is it saying I need to jumper the two terminals?


1951 Chevy 3100 5-window
261 cu in, 348 Head, Split Fenton Exhaust
Offy with Dual Weber 2 Bbl Carbs
51bowtie #1380126 10/09/2020 4:18 PM
Joined: May 2015
Posts: 11,002
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Joined: May 2015
Posts: 11,002
Originally Posted by 51bowtie
Looks like what I need but....the relationship between the 85 terminal and the 30 terminal. Is it saying I need to jumper the two terminals?
Yes, although you could power each one separately from different circuits.


Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
51bowtie #1380159 10/09/2020 8:54 PM
Joined: Jan 2000
Posts: 591
D
'Bolter
'Bolter
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Joined: Jan 2000
Posts: 591
The relay is a Bosch relay. The attached is similar to Rusty Rod's diagram, but shows the internals of the relay.
don
Attachments
horn.JPG (42.28 KB, 81 downloads)

51bowtie #1380166 10/09/2020 10:10 PM
Joined: Dec 2005
Posts: 50
5
Wrench Fetcher
Wrench Fetcher
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Joined: Dec 2005
Posts: 50
Hooked everything up per all the info I got and the horn continually sounds. Figured if was something in the steering column. Took it apart and stripped it. The horn still sounds! WTH?


1951 Chevy 3100 5-window
261 cu in, 348 Head, Split Fenton Exhaust
Offy with Dual Weber 2 Bbl Carbs

Moderated by  Jon G, Rusty Rod 

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