Get your horn working again with the Standard Ignition Horn Relay RY-318. This relay uses the low-current signal from the horn switch to close a higher-current circuit that powers the horn, and it drops in as a direct-fit replacement across a wide range of Toyota, Lexus, and Geo models — including the 1993-1997 Geo Prizm, 1992-1995 Lexus ES300, 1991-2000 Toyota 4Runner, 1992-1996 Toyota Camry, and 1995-2004 Toyota Tacoma. See the Buyer's Guide tab for the full list of covered vehicles.
Signs the relay may need replacing include a horn that won't sound, sounds intermittently, or sticks on. Because these symptoms can also stem from the horn switch, wiring, fuse, or the horn itself, diagnose the cause before replacing. If a failed horn relay is the cause, this RY-318 replaces it.
Manufacturer part number RY-318 (also RY318).
What does this horn relay do?
It uses the low-current signal from the horn switch to close a higher-current circuit that powers the horn.
Will the RY-318 fit my vehicle?
It's a direct-fit replacement for the listed applications, such as the 1992-1996 Toyota Camry and 1995-2004 Toyota Tacoma. Check the Buyer's Guide tab for the complete list.
Does it fit all engine types?
Yes. For each listed vehicle, it's cataloged to fit all engine configurations.
My horn won't sound — is the relay the problem?
Maybe. A no-sound horn can also come from the switch, wiring, fuse, or the horn itself, so diagnose the cause first. If the relay is at fault, this replaces it.
What are the signs of a failing horn relay?
Common signs include a horn that won't sound, works intermittently, or sticks on. Confirm the relay is the cause before replacing.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
