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Registered
Join Date: Oct 2006
Location: Bend, Oregon
Posts: 120
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Horn upgrade wiring
I just purchased the horn upgrade from our host, and can't figure out how the wiring connectors go together. It did not come with instructions, so I thought I would ask on this message board before I gave them a phone call. I'm hoping somebody who has done this procedure can give me an easy explanation. Thanks!
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1987 911 Guards Red Carrera (current project) 1988 BMW 325 iS (sold) 1989 325iX (winter blaster) 2013 VW Jetta TDI (civilized touring car) 1991 Saab SPG (sold) |
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12-15-2013, 10:31 AM
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Join Date: Apr 2005
Location: outta here
Posts: 52,927
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Just a guess, but... try cutting the old connectors off of the horn wires. Crimp on the new terminals (don't forget the yellow bits), insert them into the new plugs and plug them into the horns.
Push the horn button to test the honking. JR |
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12-15-2013, 11:54 AM
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Join Date: Oct 2006
Location: Bend, Oregon
Posts: 120
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Javadog...No way do the yellow things fit over the new terminals. Thanks for your idea, however.
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1987 911 Guards Red Carrera (current project) 1988 BMW 325 iS (sold) 1989 325iX (winter blaster) 2013 VW Jetta TDI (civilized touring car) 1991 Saab SPG (sold) |
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12-15-2013, 04:13 PM
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Put said yellow things on wires before crimping on metal ends!
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12-15-2013, 04:39 PM
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I would clip the old plug off slip the yellow seal over the wire strip insulation then crimp end on and push into socket
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81 sc 3.0 turbo wb coupe |
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12-15-2013, 04:50 PM
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Join Date: Feb 2005
Location: Mexico
Posts: 1,961
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The yellow things are seals to avoid water entering the contacts. It is a very tight fit.
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12-15-2013, 05:02 PM
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Join Date: Apr 2005
Location: outta here
Posts: 52,927
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In this order:
wire, yellow boot, terminal, plug, horn. JR |
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12-16-2013, 04:39 AM
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Join Date: Mar 2004
Location: Windsor, CT
Posts: 2,119
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Has anyone actually figured out how to get the yellow seals on the multi-strand wire?
I read this post and still have no Idea were they go and how. They have a miniscule hole in them. A picture would be helpful.
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Mike '82 911SC, SSI, 22/29 tbars, 22F/22R Adj swaybars, Bilstein Sport, Elephant polybronze & monoballs, Cambermeister bar, turbo tierods, Carrera oil cooler, front brake cooling ducts, Sparco Sprint 5 & Recaro SRD PAX seat, Teamtech harness, DAS Sport rollbar. |
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03-22-2014, 12:10 PM
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Join Date: Mar 2004
Location: Windsor, CT
Posts: 2,119
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I did a search and found the assembly instructions from the manufacturer. Turns out the little yellow seal is designed for a 0.9-1.4mm wire. Very small! The stock wire in the SC is ~3mm in diameter. And the hole that the seal fits into is 3.45mm in diameter. Math says stock 3mm wires do not fit the connectors. And 1mm wire looks too skinny.
Fortunately an intermediate wire size (1.8mm) will work. My solution to go between the 1.8mm to 3mm wire was to wire the plug with spade connections, so I could retain the factory connector. I am backwards compatible to original horns if so desired in the future. Wire Sizes:  Building the Plug:  Installed:  Hope this helps the next person.
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Mike '82 911SC, SSI, 22/29 tbars, 22F/22R Adj swaybars, Bilstein Sport, Elephant polybronze & monoballs, Cambermeister bar, turbo tierods, Carrera oil cooler, front brake cooling ducts, Sparco Sprint 5 & Recaro SRD PAX seat, Teamtech harness, DAS Sport rollbar. |
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03-23-2014, 10:37 AM
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