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Welcome to the NEW WCCC Cougar Parts Catalog
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Our warehouse is closed for New Years Jan 1-4th.
Orders placed after 12PM PST on Tuesday 12/30/2025 may not ship until Monday (1/5/2026).
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NOTE: A FEW CUSTOMERS HAVE MENTIONED THAT THE INSTRUCTIONS MAY BE WRONG. SWITCHING PINS 1 AND 5 HAD A BETTER RESULT. IF YOU RECEIVE THIS PART AND ARE HAVING TROUBLE WITH THE INCLUDED INSTRUCTIONS, TRY SWITCHING TO SEE IF YOU GET THE SAME RESULTS.

Make those horns sound like they should! These relay kits work just like my headlight relay kits to deliver full system voltage to your horns. Ford used horn relays on many vehicles into the early seventies. Unfortunately Mustangs after '65 and Cougars never had them. These Heavy duty relays are C4AZ-13853 replacement units modified for use on our classic cars.

Included in kit:
Relay, wiring harness and instructions.
Benefits:

  • Easy to install with no cutting of your original harness. Mount the relay, run a power feed, connect the new horn wires and and you're done.
  • Delivers full battery voltage to your horns.
  • The feed wire and relay are easily hidden.
  • Compact size - Relay measures less than 1x1x2.


NOTE: Kit does not include horns

Shipping Weight:
0.50 LBS
(weight shown may be the dimensional weight)
Shipping Dimensions:
Number of questions: 0

Why am I being warned about potential exposure to chemicals in motor vehicle parts?


  • Some chemicals in motor vehicle parts are on the Proposition 65 list because they can cause cancer and/or birth defects or other reproductive harm.
  • When purchasing USED or NOS items, we do not know if listed chemicals are present in these products.
  • This product is known to contain the following listed chemicals:

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