my horn is not working due to a breakdown in the electrical wiring

1995 CHEVROLET CAVALIER
130,000 MILES • 4 CYL • FWD • AUTOMATIC
Avatar
PSWEENEY
  • MEMBER
  • 1 POST
I have just been told by my local shop guy that my horn is not working due to a breakdown in the electrical wiring (they tried everything else with no success). He said I need to bring it to a dealership. Considering the fact that my car is not worth any more than $500, if that, I was wondering what kind of estimate to expect when I bring it in. With today's economy, money is extremely tight and I don't want to have to pay $100 just for them to tell me it's going to cost $1000 to fix it. Of course, I also can't go without a horn for very long (nor would it pass inspection, although it's not due until May). Any insight?
Jan 24, 2009 at 2:04 AM
Advertisement
Avatar
SQM
  • ✓Experienced Mechanic
  • 6,383 POSTS
Hello,

An inoperative horn can be due to a bad relay, wiring or a bad horn itself. It can also be due to a bad switch for the horn.

First check the relay. The horn relay is located under the left-hand side instrument panel (see diagram).
Check for any corrosion or burn pins.
This relay can also be tested:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

If the relay is good check to see if you are getting power to the horn harness. Check for power at the connector that attached to the horn.
If there is no power at the connector then there is a short in the horn harness. This will require you to trace the wires to find the short. I have attached the wiring schematic below.

https://www.2carpros.com/articles/how-to-check-wiring

If there is power at the connector then the horn is defective and need to be replaced.

Please let me know of any questions.
Thank you.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Attached Media
Oct 22, 2021 at 1:47 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle