73-77 A-body TECH Includes 73GTO, LeMans, Grand Am, Can Am

          
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  #1  
Old 06-21-2026, 10:07 AM
GtoBrian's Avatar
GtoBrian GtoBrian is offline
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Join Date: Jan 2005
Location: Lilburn, GA
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Default 1974 lemans horn relay location

Can someone tell me where the horn relay is on my 74 lemans? On my older cars it has been on the firewall but doesn’t seem to be on this year. My horn and key buzzer recently stopped working and I am trying to diagnose the problem, a picture of the actual relay would help also, Thank you for anyone’s help it is much appreciated.

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1969 Judge, Matador Red, Black, RAIII 4Spd, Owned 33years
1974 LeMans GT Honduras Maroon, 3 speed stick 350 2brl.
1963 Catalina 389 Black with Burgandy Ventura interior SOLD
1970 GTO Pepper Green 400 YS auto Factory A/C 56K orig miles
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Old 06-21-2026, 06:38 PM
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importsmasher importsmasher is offline
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Default

This is on my 74 Grand Am. Should be the same as the LeMans. I am presuming this is the horn relay in the center of the firewall, but not 100% sure and can't really test because my car isn't functional yet lol.

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66 GTO convertible 389/4 speed (parents bought new)
73 Firebird Formula 400/4 speed
74 GTO 455/4 speed
74 Grand Am
  #3  
Old 06-21-2026, 07:14 PM
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GtoBrian GtoBrian is offline
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Mine doesn’t look like that.

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1969 Judge, Matador Red, Black, RAIII 4Spd, Owned 33years
1974 LeMans GT Honduras Maroon, 3 speed stick 350 2brl.
1963 Catalina 389 Black with Burgandy Ventura interior SOLD
1970 GTO Pepper Green 400 YS auto Factory A/C 56K orig miles
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