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c2 horn placement on ac car

michael sommers

Well-known member
Joined
Nov 26, 2003
Messages
94
Location
tx
Corvette
67 sbc conv
Trying to properly install new horns in an ac sbc the AIM manual page G273 has a very poor picture of the installation of a support plate with rivets.
I would like to ask several questions to persons who have knowledge
in this area.
Contrasting AIM pictures ac G273 vs non ac G220.
the non ac seems very straight forward. existing, but not shown are 2
raised stampings which surround the welded nuts giving lateral L/R support to the horn mount bracket.
Does the ac car horns use the same mount brackets? or is modification needed?
In the ac car how is if any, support given to the mount bracket if used?

The mount bracket if used would require a orientation different than shown on page G273.

It appears as though the mount bolt goes through the edge of the horn body Is this true?

Is the existing hole 1.4 in. above shown in the picture for the reinforcement ,the hole for the parking light cable?

Any help would be welcomed!
 

cfalson

Well-known member
Joined
Apr 28, 2004
Messages
97
Location
New York
Corvette
1966 Trophy Blue Coupe
For a 66 horns mount on the glass with a stiffner plate behind them, not on the core support. The same horns and bracket are used and the measurements are called out in the options section of the AIM
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
Does the ac car horns use the same mount brackets? or is modification needed?
In the ac car how is if any, support given to the mount bracket if used?

The mount bracket if used would require a orientation different than shown on page G273.

It appears as though the mount bolt goes through the edge of the horn body Is this true?

Is the existing hole 1.4 in. above shown in the picture for the reinforcement ,the hole for the parking light cable?

Any help would be welcomed!

A/C cars use the same horns as non-A/C cars. The riveted-on reinforcement plate for the A/C horn mounting has its center hole (for the bolt) 1.44" below the center of the parking lamp wire grommet hole. The horn attaching bolt doesn't go through the horn - it goes through the hole in the bracket that's part of the horn, just like a non-A/C car, and there are no "ribs" in the inner fender to locate it like there are on the radiator support for the non-A/C horn. See section C60, sheet B1.

:beer
 

michael sommers

Well-known member
Joined
Nov 26, 2003
Messages
94
Location
tx
Corvette
67 sbc conv
thanks,
Is there any interference with the parking light cable , condenser or grill ,does the horn loosen and droop?
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
You just angle the horn outboard so it clears the condenser and dehydrator bottle and torque it down. :)
 

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