horn problem!!!
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 24
Likes: 0
horn problem!!!
hi all, i fitted two new horns and think i may have crossed a wire at some point as they were working. now when i press the horn nothing but i can hear a click under the passenger side dash maybe the relay. i imagine power is getting to it as it's making a click so the fuse must be ok but not sure which fuse to check any ideas please?
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
If the relay clicks (and assuming it's OK) the problem is in the horns or the wiring.
Check for 12 volts at the connector on the horn when the horn button is pressed. You also need a good ground for the horns. Usually that connection is made through the mounting bolt.
Check for 12 volts at the connector on the horn when the horn button is pressed. You also need a good ground for the horns. Usually that connection is made through the mounting bolt.
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 24
Likes: 0
If the relay clicks (and assuming it's OK) the problem is in the horns or the wiring.
Check for 12 volts at the connector on the horn when the horn button is pressed. You also need a good ground for the horns. Usually that connection is made through the mounting bolt.
Check for 12 volts at the connector on the horn when the horn button is pressed. You also need a good ground for the horns. Usually that connection is made through the mounting bolt.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
my high brake light doesn't work. no power going to the wires when i put my foot on the break plus one bulb out. do all 4 bulbs need to be working for the connection to happen? any ideas where the wires go to from the light , connect / come out before i start dismantling
I think it depends on the year. On my car there is a separate switch on the brake pedal for the high mount brake light. I vaguely remember that on later years the two brake light switches were combined into one switch.
The switch might be out of adjustment. You push down on the brake pedal, push the switch forward and then pull up on the brake pedal. It's self-adjusting.
Last edited by Cliff Harris; Jun 12, 2014 at 01:21 AM. Reason: Corrected switch adjustment procedure.
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 24
Likes: 0
The high mount brake light should work no matter how many bulbs are working (or not). A friend of mine had 3 out on his '89 and the one remaining bulb still worked.
I think it depends on the year. On my car there is a separate switch on the brake pedal for the high mount brake light. I vaguely remember that on later years the two brake light switches were combined into one switch.
The switch might be out of adjustment. You push it toward the brake pedal lever and then step on the brake (it's self adjusting).
I think it depends on the year. On my car there is a separate switch on the brake pedal for the high mount brake light. I vaguely remember that on later years the two brake light switches were combined into one switch.
The switch might be out of adjustment. You push it toward the brake pedal lever and then step on the brake (it's self adjusting).
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Here's a pic of my brake pedal switches. The cruise control vacuum lines go into the top of the switch on the left, so it appears that is the cruise control switch. According to my FSM, the switch on the right is the brake light switch and the white wire goes to the brake lights and the light blue wire goes to the high mount brake light:
Safety Car
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
Did your new horns work for a short time and then quit? If they never worked, do they have two terminals, or only one? If they have two terminals, one of them must be connected to a good ground.
Just because the relay clicks doesn't prove it's good. It could still have bad contacts, which is very likely if both of your original horns quit at the same time, and both of your new horns don't work either!
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 24
Likes: 0
You must not be looking very hard. The brake pedal has several switches on it. One is for the brake lights (obviously). There is a combination electrical and vacuum switch that is used to turn off the cruise control when you step on the brake.
Here's a pic of my brake pedal switches. The cruise control vacuum lines go into the top of the switch on the left, so it appears that is the cruise control switch. According to my FSM, the switch on the right is the brake light switch and the white wire goes to the brake lights and the light blue wire goes to the high mount brake light:
Here's a pic of my brake pedal switches. The cruise control vacuum lines go into the top of the switch on the left, so it appears that is the cruise control switch. According to my FSM, the switch on the right is the brake light switch and the white wire goes to the brake lights and the light blue wire goes to the high mount brake light:
Thread Starter
Heel & Toe
Joined: Apr 2014
Posts: 24
Likes: 0
What do you mean when you say "they were working"?
Did your new horns work for a short time and then quit? If they never worked, do they have two terminals, or only one? If they have two terminals, one of them must be connected to a good ground.
Just because the relay clicks doesn't prove it's good. It could still have bad contacts, which is very likely if both of your original horns quit at the same time, and both of your new horns don't work either!
Did your new horns work for a short time and then quit? If they never worked, do they have two terminals, or only one? If they have two terminals, one of them must be connected to a good ground.
Just because the relay clicks doesn't prove it's good. It could still have bad contacts, which is very likely if both of your original horns quit at the same time, and both of your new horns don't work either!
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I just remembered I have a picture of the kick panel (and the screws in question):
Last edited by Cliff Harris; Jun 13, 2014 at 01:35 AM.